drivers/net/ethernet/intel/i40e/i40e_main.c

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2014 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 0
  41 #define DRV_VERSION_MINOR 3
  42 #define DRV_VERSION_BUILD 41
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  60
  61 /* i40e_pci_tbl - PCI Device ID Table
  62  *
  63  * Last entry must be all 0s
  64  *
  65  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  66  *   Class, Class Mask, private data (not used) }
  67  */
  68 static DEFINE_PCI_DEVICE_TABLE(i40e_pci_tbl) = {
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X710), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_D), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  79         /* required last entry */
  80         {0, }
  81 };
  82 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  83
  84 #define I40E_MAX_VF_COUNT 128
  85 static int debug = -1;
  86 module_param(debug, int, 0);
  87 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  88
  89 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  90 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  91 MODULE_LICENSE("GPL");
  92 MODULE_VERSION(DRV_VERSION);
  93
  94 /**
  95  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  96  * @hw:   pointer to the HW structure
  97  * @mem:  ptr to mem struct to fill out
  98  * @size: size of memory requested
  99  * @alignment: what to align the allocation to
 100  **/
 101 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 102                             u64 size, u32 alignment)
 103 {
 104         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 105
 106         mem->size = ALIGN(size, alignment);
 107         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 108                                       &mem->pa, GFP_KERNEL);
 109         if (!mem->va)
 110                 return -ENOMEM;
 111
 112         return 0;
 113 }
 114
 115 /**
 116  * i40e_free_dma_mem_d - OS specific memory free for shared code
 117  * @hw:   pointer to the HW structure
 118  * @mem:  ptr to mem struct to free
 119  **/
 120 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 121 {
 122         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 123
 124         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 125         mem->va = NULL;
 126         mem->pa = 0;
 127         mem->size = 0;
 128
 129         return 0;
 130 }
 131
 132 /**
 133  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 134  * @hw:   pointer to the HW structure
 135  * @mem:  ptr to mem struct to fill out
 136  * @size: size of memory requested
 137  **/
 138 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 139                              u32 size)
 140 {
 141         mem->size = size;
 142         mem->va = kzalloc(size, GFP_KERNEL);
 143
 144         if (!mem->va)
 145                 return -ENOMEM;
 146
 147         return 0;
 148 }
 149
 150 /**
 151  * i40e_free_virt_mem_d - OS specific memory free for shared code
 152  * @hw:   pointer to the HW structure
 153  * @mem:  ptr to mem struct to free
 154  **/
 155 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 156 {
 157         /* it's ok to kfree a NULL pointer */
 158         kfree(mem->va);
 159         mem->va = NULL;
 160         mem->size = 0;
 161
 162         return 0;
 163 }
 164
 165 /**
 166  * i40e_get_lump - find a lump of free generic resource
 167  * @pf: board private structure
 168  * @pile: the pile of resource to search
 169  * @needed: the number of items needed
 170  * @id: an owner id to stick on the items assigned
 171  *
 172  * Returns the base item index of the lump, or negative for error
 173  *
 174  * The search_hint trick and lack of advanced fit-finding only work
 175  * because we're highly likely to have all the same size lump requests.
 176  * Linear search time and any fragmentation should be minimal.
 177  **/
 178 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 179                          u16 needed, u16 id)
 180 {
 181         int ret = -ENOMEM;
 182         int i, j;
 183
 184         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 185                 dev_info(&pf->pdev->dev,
 186                          "param err: pile=%p needed=%d id=0x%04x\n",
 187                          pile, needed, id);
 188                 return -EINVAL;
 189         }
 190
 191         /* start the linear search with an imperfect hint */
 192         i = pile->search_hint;
 193         while (i < pile->num_entries) {
 194                 /* skip already allocated entries */
 195                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 196                         i++;
 197                         continue;
 198                 }
 199
 200                 /* do we have enough in this lump? */
 201                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 202                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 203                                 break;
 204                 }
 205
 206                 if (j == needed) {
 207                         /* there was enough, so assign it to the requestor */
 208                         for (j = 0; j < needed; j++)
 209                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 210                         ret = i;
 211                         pile->search_hint = i + j;
 212                         break;
 213                 } else {
 214                         /* not enough, so skip over it and continue looking */
 215                         i += j;
 216                 }
 217         }
 218
 219         return ret;
 220 }
 221
 222 /**
 223  * i40e_put_lump - return a lump of generic resource
 224  * @pile: the pile of resource to search
 225  * @index: the base item index
 226  * @id: the owner id of the items assigned
 227  *
 228  * Returns the count of items in the lump
 229  **/
 230 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 231 {
 232         int valid_id = (id | I40E_PILE_VALID_BIT);
 233         int count = 0;
 234         int i;
 235
 236         if (!pile || index >= pile->num_entries)
 237                 return -EINVAL;
 238
 239         for (i = index;
 240              i < pile->num_entries && pile->list[i] == valid_id;
 241              i++) {
 242                 pile->list[i] = 0;
 243                 count++;
 244         }
 245
 246         if (count && index < pile->search_hint)
 247                 pile->search_hint = index;
 248
 249         return count;
 250 }
 251
 252 /**
 253  * i40e_service_event_schedule - Schedule the service task to wake up
 254  * @pf: board private structure
 255  *
 256  * If not already scheduled, this puts the task into the work queue
 257  **/
 258 static void i40e_service_event_schedule(struct i40e_pf *pf)
 259 {
 260         if (!test_bit(__I40E_DOWN, &pf->state) &&
 261             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 262             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 263                 schedule_work(&pf->service_task);
 264 }
 265
 266 /**
 267  * i40e_tx_timeout - Respond to a Tx Hang
 268  * @netdev: network interface device structure
 269  *
 270  * If any port has noticed a Tx timeout, it is likely that the whole
 271  * device is munged, not just the one netdev port, so go for the full
 272  * reset.
 273  **/
 274 static void i40e_tx_timeout(struct net_device *netdev)
 275 {
 276         struct i40e_netdev_priv *np = netdev_priv(netdev);
 277         struct i40e_vsi *vsi = np->vsi;
 278         struct i40e_pf *pf = vsi->back;
 279
 280         pf->tx_timeout_count++;
 281
 282         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 283                 pf->tx_timeout_recovery_level = 0;
 284         pf->tx_timeout_last_recovery = jiffies;
 285         netdev_info(netdev, "tx_timeout recovery level %d\n",
 286                     pf->tx_timeout_recovery_level);
 287
 288         switch (pf->tx_timeout_recovery_level) {
 289         case 0:
 290                 /* disable and re-enable queues for the VSI */
 291                 if (in_interrupt()) {
 292                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 293                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 294                 } else {
 295                         i40e_vsi_reinit_locked(vsi);
 296                 }
 297                 break;
 298         case 1:
 299                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 300                 break;
 301         case 2:
 302                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 303                 break;
 304         case 3:
 305                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 306                 break;
 307         default:
 308                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 309                 set_bit(__I40E_DOWN, &vsi->state);
 310                 i40e_down(vsi);
 311                 break;
 312         }
 313         i40e_service_event_schedule(pf);
 314         pf->tx_timeout_recovery_level++;
 315 }
 316
 317 /**
 318  * i40e_release_rx_desc - Store the new tail and head values
 319  * @rx_ring: ring to bump
 320  * @val: new head index
 321  **/
 322 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 323 {
 324         rx_ring->next_to_use = val;
 325
 326         /* Force memory writes to complete before letting h/w
 327          * know there are new descriptors to fetch.  (Only
 328          * applicable for weak-ordered memory model archs,
 329          * such as IA-64).
 330          */
 331         wmb();
 332         writel(val, rx_ring->tail);
 333 }
 334
 335 /**
 336  * i40e_get_vsi_stats_struct - Get System Network Statistics
 337  * @vsi: the VSI we care about
 338  *
 339  * Returns the address of the device statistics structure.
 340  * The statistics are actually updated from the service task.
 341  **/
 342 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 343 {
 344         return &vsi->net_stats;
 345 }
 346
 347 /**
 348  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 349  * @netdev: network interface device structure
 350  *
 351  * Returns the address of the device statistics structure.
 352  * The statistics are actually updated from the service task.
 353  **/
 354 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 355                                              struct net_device *netdev,
 356                                              struct rtnl_link_stats64 *stats)
 357 {
 358         struct i40e_netdev_priv *np = netdev_priv(netdev);
 359         struct i40e_vsi *vsi = np->vsi;
 360         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 361         int i;
 362
 363         if (test_bit(__I40E_DOWN, &vsi->state))
 364                 return stats;
 365
 366         if (!vsi->tx_rings)
 367                 return stats;
 368
 369         rcu_read_lock();
 370         for (i = 0; i < vsi->num_queue_pairs; i++) {
 371                 struct i40e_ring *tx_ring, *rx_ring;
 372                 u64 bytes, packets;
 373                 unsigned int start;
 374
 375                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 376                 if (!tx_ring)
 377                         continue;
 378
 379                 do {
 380                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 381                         packets = tx_ring->stats.packets;
 382                         bytes   = tx_ring->stats.bytes;
 383                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 384
 385                 stats->tx_packets += packets;
 386                 stats->tx_bytes   += bytes;
 387                 rx_ring = &tx_ring[1];
 388
 389                 do {
 390                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 391                         packets = rx_ring->stats.packets;
 392                         bytes   = rx_ring->stats.bytes;
 393                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 394
 395                 stats->rx_packets += packets;
 396                 stats->rx_bytes   += bytes;
 397         }
 398         rcu_read_unlock();
 399
 400         /* following stats updated by ixgbe_watchdog_task() */
 401         stats->multicast        = vsi_stats->multicast;
 402         stats->tx_errors        = vsi_stats->tx_errors;
 403         stats->tx_dropped       = vsi_stats->tx_dropped;
 404         stats->rx_errors        = vsi_stats->rx_errors;
 405         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 406         stats->rx_length_errors = vsi_stats->rx_length_errors;
 407
 408         return stats;
 409 }
 410
 411 /**
 412  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 413  * @vsi: the VSI to have its stats reset
 414  **/
 415 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 416 {
 417         struct rtnl_link_stats64 *ns;
 418         int i;
 419
 420         if (!vsi)
 421                 return;
 422
 423         ns = i40e_get_vsi_stats_struct(vsi);
 424         memset(ns, 0, sizeof(*ns));
 425         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 426         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 427         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 428         if (vsi->rx_rings && vsi->rx_rings[0]) {
 429                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 430                         memset(&vsi->rx_rings[i]->stats, 0 ,
 431                                sizeof(vsi->rx_rings[i]->stats));
 432                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 433                                sizeof(vsi->rx_rings[i]->rx_stats));
 434                         memset(&vsi->tx_rings[i]->stats, 0 ,
 435                                sizeof(vsi->tx_rings[i]->stats));
 436                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 437                                sizeof(vsi->tx_rings[i]->tx_stats));
 438                 }
 439         }
 440         vsi->stat_offsets_loaded = false;
 441 }
 442
 443 /**
 444  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 445  * @pf: the PF to be reset
 446  **/
 447 void i40e_pf_reset_stats(struct i40e_pf *pf)
 448 {
 449         memset(&pf->stats, 0, sizeof(pf->stats));
 450         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 451         pf->stat_offsets_loaded = false;
 452 }
 453
 454 /**
 455  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 456  * @hw: ptr to the hardware info
 457  * @hireg: the high 32 bit reg to read
 458  * @loreg: the low 32 bit reg to read
 459  * @offset_loaded: has the initial offset been loaded yet
 460  * @offset: ptr to current offset value
 461  * @stat: ptr to the stat
 462  *
 463  * Since the device stats are not reset at PFReset, they likely will not
 464  * be zeroed when the driver starts.  We'll save the first values read
 465  * and use them as offsets to be subtracted from the raw values in order
 466  * to report stats that count from zero.  In the process, we also manage
 467  * the potential roll-over.
 468  **/
 469 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 470                                bool offset_loaded, u64 *offset, u64 *stat)
 471 {
 472         u64 new_data;
 473
 474         if (hw->device_id == I40E_DEV_ID_QEMU) {
 475                 new_data = rd32(hw, loreg);
 476                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 477         } else {
 478                 new_data = rd64(hw, loreg);
 479         }
 480         if (!offset_loaded)
 481                 *offset = new_data;
 482         if (likely(new_data >= *offset))
 483                 *stat = new_data - *offset;
 484         else
 485                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 486         *stat &= 0xFFFFFFFFFFFFULL;
 487 }
 488
 489 /**
 490  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 491  * @hw: ptr to the hardware info
 492  * @reg: the hw reg to read
 493  * @offset_loaded: has the initial offset been loaded yet
 494  * @offset: ptr to current offset value
 495  * @stat: ptr to the stat
 496  **/
 497 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 498                                bool offset_loaded, u64 *offset, u64 *stat)
 499 {
 500         u32 new_data;
 501
 502         new_data = rd32(hw, reg);
 503         if (!offset_loaded)
 504                 *offset = new_data;
 505         if (likely(new_data >= *offset))
 506                 *stat = (u32)(new_data - *offset);
 507         else
 508                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 509 }
 510
 511 /**
 512  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 513  * @vsi: the VSI to be updated
 514  **/
 515 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 516 {
 517         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 518         struct i40e_pf *pf = vsi->back;
 519         struct i40e_hw *hw = &pf->hw;
 520         struct i40e_eth_stats *oes;
 521         struct i40e_eth_stats *es;     /* device's eth stats */
 522
 523         es = &vsi->eth_stats;
 524         oes = &vsi->eth_stats_offsets;
 525
 526         /* Gather up the stats that the hw collects */
 527         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 528                            vsi->stat_offsets_loaded,
 529                            &oes->tx_errors, &es->tx_errors);
 530         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 531                            vsi->stat_offsets_loaded,
 532                            &oes->rx_discards, &es->rx_discards);
 533
 534         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 535                            I40E_GLV_GORCL(stat_idx),
 536                            vsi->stat_offsets_loaded,
 537                            &oes->rx_bytes, &es->rx_bytes);
 538         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 539                            I40E_GLV_UPRCL(stat_idx),
 540                            vsi->stat_offsets_loaded,
 541                            &oes->rx_unicast, &es->rx_unicast);
 542         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 543                            I40E_GLV_MPRCL(stat_idx),
 544                            vsi->stat_offsets_loaded,
 545                            &oes->rx_multicast, &es->rx_multicast);
 546         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 547                            I40E_GLV_BPRCL(stat_idx),
 548                            vsi->stat_offsets_loaded,
 549                            &oes->rx_broadcast, &es->rx_broadcast);
 550
 551         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 552                            I40E_GLV_GOTCL(stat_idx),
 553                            vsi->stat_offsets_loaded,
 554                            &oes->tx_bytes, &es->tx_bytes);
 555         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 556                            I40E_GLV_UPTCL(stat_idx),
 557                            vsi->stat_offsets_loaded,
 558                            &oes->tx_unicast, &es->tx_unicast);
 559         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 560                            I40E_GLV_MPTCL(stat_idx),
 561                            vsi->stat_offsets_loaded,
 562                            &oes->tx_multicast, &es->tx_multicast);
 563         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 564                            I40E_GLV_BPTCL(stat_idx),
 565                            vsi->stat_offsets_loaded,
 566                            &oes->tx_broadcast, &es->tx_broadcast);
 567         vsi->stat_offsets_loaded = true;
 568 }
 569
 570 /**
 571  * i40e_update_veb_stats - Update Switch component statistics
 572  * @veb: the VEB being updated
 573  **/
 574 static void i40e_update_veb_stats(struct i40e_veb *veb)
 575 {
 576         struct i40e_pf *pf = veb->pf;
 577         struct i40e_hw *hw = &pf->hw;
 578         struct i40e_eth_stats *oes;
 579         struct i40e_eth_stats *es;     /* device's eth stats */
 580         int idx = 0;
 581
 582         idx = veb->stats_idx;
 583         es = &veb->stats;
 584         oes = &veb->stats_offsets;
 585
 586         /* Gather up the stats that the hw collects */
 587         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 588                            veb->stat_offsets_loaded,
 589                            &oes->tx_discards, &es->tx_discards);
 590         if (hw->revision_id > 0)
 591                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 592                                    veb->stat_offsets_loaded,
 593                                    &oes->rx_unknown_protocol,
 594                                    &es->rx_unknown_protocol);
 595         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 596                            veb->stat_offsets_loaded,
 597                            &oes->rx_bytes, &es->rx_bytes);
 598         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 599                            veb->stat_offsets_loaded,
 600                            &oes->rx_unicast, &es->rx_unicast);
 601         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 602                            veb->stat_offsets_loaded,
 603                            &oes->rx_multicast, &es->rx_multicast);
 604         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 605                            veb->stat_offsets_loaded,
 606                            &oes->rx_broadcast, &es->rx_broadcast);
 607
 608         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 609                            veb->stat_offsets_loaded,
 610                            &oes->tx_bytes, &es->tx_bytes);
 611         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 612                            veb->stat_offsets_loaded,
 613                            &oes->tx_unicast, &es->tx_unicast);
 614         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 615                            veb->stat_offsets_loaded,
 616                            &oes->tx_multicast, &es->tx_multicast);
 617         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 618                            veb->stat_offsets_loaded,
 619                            &oes->tx_broadcast, &es->tx_broadcast);
 620         veb->stat_offsets_loaded = true;
 621 }
 622
 623 /**
 624  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 625  * @pf: the corresponding PF
 626  *
 627  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 628  **/
 629 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 630 {
 631         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 632         struct i40e_hw_port_stats *nsd = &pf->stats;
 633         struct i40e_hw *hw = &pf->hw;
 634         u64 xoff = 0;
 635         u16 i, v;
 636
 637         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 638             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 639                 return;
 640
 641         xoff = nsd->link_xoff_rx;
 642         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 643                            pf->stat_offsets_loaded,
 644                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 645
 646         /* No new LFC xoff rx */
 647         if (!(nsd->link_xoff_rx - xoff))
 648                 return;
 649
 650         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 651         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
 652                 struct i40e_vsi *vsi = pf->vsi[v];
 653
 654                 if (!vsi)
 655                         continue;
 656
 657                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 658                         struct i40e_ring *ring = vsi->tx_rings[i];
 659                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 660                 }
 661         }
 662 }
 663
 664 /**
 665  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 666  * @pf: the corresponding PF
 667  *
 668  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 669  **/
 670 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 671 {
 672         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 673         struct i40e_hw_port_stats *nsd = &pf->stats;
 674         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 675         struct i40e_dcbx_config *dcb_cfg;
 676         struct i40e_hw *hw = &pf->hw;
 677         u16 i, v;
 678         u8 tc;
 679
 680         dcb_cfg = &hw->local_dcbx_config;
 681
 682         /* See if DCB enabled with PFC TC */
 683         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 684             !(dcb_cfg->pfc.pfcenable)) {
 685                 i40e_update_link_xoff_rx(pf);
 686                 return;
 687         }
 688
 689         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 690                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 691                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 692                                    pf->stat_offsets_loaded,
 693                                    &osd->priority_xoff_rx[i],
 694                                    &nsd->priority_xoff_rx[i]);
 695
 696                 /* No new PFC xoff rx */
 697                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 698                         continue;
 699                 /* Get the TC for given priority */
 700                 tc = dcb_cfg->etscfg.prioritytable[i];
 701                 xoff[tc] = true;
 702         }
 703
 704         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 705         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
 706                 struct i40e_vsi *vsi = pf->vsi[v];
 707
 708                 if (!vsi)
 709                         continue;
 710
 711                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 712                         struct i40e_ring *ring = vsi->tx_rings[i];
 713
 714                         tc = ring->dcb_tc;
 715                         if (xoff[tc])
 716                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 717                                           &ring->state);
 718                 }
 719         }
 720 }
 721
 722 /**
 723  * i40e_update_stats - Update the board statistics counters.
 724  * @vsi: the VSI to be updated
 725  *
 726  * There are a few instances where we store the same stat in a
 727  * couple of different structs.  This is partly because we have
 728  * the netdev stats that need to be filled out, which is slightly
 729  * different from the "eth_stats" defined by the chip and used in
 730  * VF communications.  We sort it all out here in a central place.
 731  **/
 732 void i40e_update_stats(struct i40e_vsi *vsi)
 733 {
 734         struct i40e_pf *pf = vsi->back;
 735         struct i40e_hw *hw = &pf->hw;
 736         struct rtnl_link_stats64 *ons;
 737         struct rtnl_link_stats64 *ns;   /* netdev stats */
 738         struct i40e_eth_stats *oes;
 739         struct i40e_eth_stats *es;     /* device's eth stats */
 740         u32 tx_restart, tx_busy;
 741         u32 rx_page, rx_buf;
 742         u64 rx_p, rx_b;
 743         u64 tx_p, tx_b;
 744         u32 val;
 745         int i;
 746         u16 q;
 747
 748         if (test_bit(__I40E_DOWN, &vsi->state) ||
 749             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 750                 return;
 751
 752         ns = i40e_get_vsi_stats_struct(vsi);
 753         ons = &vsi->net_stats_offsets;
 754         es = &vsi->eth_stats;
 755         oes = &vsi->eth_stats_offsets;
 756
 757         /* Gather up the netdev and vsi stats that the driver collects
 758          * on the fly during packet processing
 759          */
 760         rx_b = rx_p = 0;
 761         tx_b = tx_p = 0;
 762         tx_restart = tx_busy = 0;
 763         rx_page = 0;
 764         rx_buf = 0;
 765         rcu_read_lock();
 766         for (q = 0; q < vsi->num_queue_pairs; q++) {
 767                 struct i40e_ring *p;
 768                 u64 bytes, packets;
 769                 unsigned int start;
 770
 771                 /* locate Tx ring */
 772                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 773
 774                 do {
 775                         start = u64_stats_fetch_begin_irq(&p->syncp);
 776                         packets = p->stats.packets;
 777                         bytes = p->stats.bytes;
 778                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 779                 tx_b += bytes;
 780                 tx_p += packets;
 781                 tx_restart += p->tx_stats.restart_queue;
 782                 tx_busy += p->tx_stats.tx_busy;
 783
 784                 /* Rx queue is part of the same block as Tx queue */
 785                 p = &p[1];
 786                 do {
 787                         start = u64_stats_fetch_begin_irq(&p->syncp);
 788                         packets = p->stats.packets;
 789                         bytes = p->stats.bytes;
 790                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 791                 rx_b += bytes;
 792                 rx_p += packets;
 793                 rx_buf += p->rx_stats.alloc_buff_failed;
 794                 rx_page += p->rx_stats.alloc_page_failed;
 795         }
 796         rcu_read_unlock();
 797         vsi->tx_restart = tx_restart;
 798         vsi->tx_busy = tx_busy;
 799         vsi->rx_page_failed = rx_page;
 800         vsi->rx_buf_failed = rx_buf;
 801
 802         ns->rx_packets = rx_p;
 803         ns->rx_bytes = rx_b;
 804         ns->tx_packets = tx_p;
 805         ns->tx_bytes = tx_b;
 806
 807         i40e_update_eth_stats(vsi);
 808         /* update netdev stats from eth stats */
 809         ons->rx_errors = oes->rx_errors;
 810         ns->rx_errors = es->rx_errors;
 811         ons->tx_errors = oes->tx_errors;
 812         ns->tx_errors = es->tx_errors;
 813         ons->multicast = oes->rx_multicast;
 814         ns->multicast = es->rx_multicast;
 815         ons->tx_dropped = oes->tx_discards;
 816         ns->tx_dropped = es->tx_discards;
 817
 818         /* Get the port data only if this is the main PF VSI */
 819         if (vsi == pf->vsi[pf->lan_vsi]) {
 820                 struct i40e_hw_port_stats *nsd = &pf->stats;
 821                 struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 822
 823                 i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 824                                    I40E_GLPRT_GORCL(hw->port),
 825                                    pf->stat_offsets_loaded,
 826                                    &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 827                 i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 828                                    I40E_GLPRT_GOTCL(hw->port),
 829                                    pf->stat_offsets_loaded,
 830                                    &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 831                 i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 832                                    pf->stat_offsets_loaded,
 833                                    &osd->eth.rx_discards,
 834                                    &nsd->eth.rx_discards);
 835                 i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
 836                                    pf->stat_offsets_loaded,
 837                                    &osd->eth.tx_discards,
 838                                    &nsd->eth.tx_discards);
 839                 i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 840                                    I40E_GLPRT_MPRCL(hw->port),
 841                                    pf->stat_offsets_loaded,
 842                                    &osd->eth.rx_multicast,
 843                                    &nsd->eth.rx_multicast);
 844
 845                 i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 846                                    pf->stat_offsets_loaded,
 847                                    &osd->tx_dropped_link_down,
 848                                    &nsd->tx_dropped_link_down);
 849
 850                 i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 851                                    pf->stat_offsets_loaded,
 852                                    &osd->crc_errors, &nsd->crc_errors);
 853                 ns->rx_crc_errors = nsd->crc_errors;
 854
 855                 i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 856                                    pf->stat_offsets_loaded,
 857                                    &osd->illegal_bytes, &nsd->illegal_bytes);
 858                 ns->rx_errors = nsd->crc_errors
 859                                 + nsd->illegal_bytes;
 860
 861                 i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 862                                    pf->stat_offsets_loaded,
 863                                    &osd->mac_local_faults,
 864                                    &nsd->mac_local_faults);
 865                 i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 866                                    pf->stat_offsets_loaded,
 867                                    &osd->mac_remote_faults,
 868                                    &nsd->mac_remote_faults);
 869
 870                 i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 871                                    pf->stat_offsets_loaded,
 872                                    &osd->rx_length_errors,
 873                                    &nsd->rx_length_errors);
 874                 ns->rx_length_errors = nsd->rx_length_errors;
 875
 876                 i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 877                                    pf->stat_offsets_loaded,
 878                                    &osd->link_xon_rx, &nsd->link_xon_rx);
 879                 i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 880                                    pf->stat_offsets_loaded,
 881                                    &osd->link_xon_tx, &nsd->link_xon_tx);
 882                 i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 883                 i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 884                                    pf->stat_offsets_loaded,
 885                                    &osd->link_xoff_tx, &nsd->link_xoff_tx);
 886
 887                 for (i = 0; i < 8; i++) {
 888                         i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 889                                            pf->stat_offsets_loaded,
 890                                            &osd->priority_xon_rx[i],
 891                                            &nsd->priority_xon_rx[i]);
 892                         i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 893                                            pf->stat_offsets_loaded,
 894                                            &osd->priority_xon_tx[i],
 895                                            &nsd->priority_xon_tx[i]);
 896                         i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
 897                                            pf->stat_offsets_loaded,
 898                                            &osd->priority_xoff_tx[i],
 899                                            &nsd->priority_xoff_tx[i]);
 900                         i40e_stat_update32(hw,
 901                                            I40E_GLPRT_RXON2OFFCNT(hw->port, i),
 902                                            pf->stat_offsets_loaded,
 903                                            &osd->priority_xon_2_xoff[i],
 904                                            &nsd->priority_xon_2_xoff[i]);
 905                 }
 906
 907                 i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
 908                                    I40E_GLPRT_PRC64L(hw->port),
 909                                    pf->stat_offsets_loaded,
 910                                    &osd->rx_size_64, &nsd->rx_size_64);
 911                 i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
 912                                    I40E_GLPRT_PRC127L(hw->port),
 913                                    pf->stat_offsets_loaded,
 914                                    &osd->rx_size_127, &nsd->rx_size_127);
 915                 i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
 916                                    I40E_GLPRT_PRC255L(hw->port),
 917                                    pf->stat_offsets_loaded,
 918                                    &osd->rx_size_255, &nsd->rx_size_255);
 919                 i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
 920                                    I40E_GLPRT_PRC511L(hw->port),
 921                                    pf->stat_offsets_loaded,
 922                                    &osd->rx_size_511, &nsd->rx_size_511);
 923                 i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
 924                                    I40E_GLPRT_PRC1023L(hw->port),
 925                                    pf->stat_offsets_loaded,
 926                                    &osd->rx_size_1023, &nsd->rx_size_1023);
 927                 i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
 928                                    I40E_GLPRT_PRC1522L(hw->port),
 929                                    pf->stat_offsets_loaded,
 930                                    &osd->rx_size_1522, &nsd->rx_size_1522);
 931                 i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
 932                                    I40E_GLPRT_PRC9522L(hw->port),
 933                                    pf->stat_offsets_loaded,
 934                                    &osd->rx_size_big, &nsd->rx_size_big);
 935
 936                 i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
 937                                    I40E_GLPRT_PTC64L(hw->port),
 938                                    pf->stat_offsets_loaded,
 939                                    &osd->tx_size_64, &nsd->tx_size_64);
 940                 i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
 941                                    I40E_GLPRT_PTC127L(hw->port),
 942                                    pf->stat_offsets_loaded,
 943                                    &osd->tx_size_127, &nsd->tx_size_127);
 944                 i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
 945                                    I40E_GLPRT_PTC255L(hw->port),
 946                                    pf->stat_offsets_loaded,
 947                                    &osd->tx_size_255, &nsd->tx_size_255);
 948                 i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
 949                                    I40E_GLPRT_PTC511L(hw->port),
 950                                    pf->stat_offsets_loaded,
 951                                    &osd->tx_size_511, &nsd->tx_size_511);
 952                 i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
 953                                    I40E_GLPRT_PTC1023L(hw->port),
 954                                    pf->stat_offsets_loaded,
 955                                    &osd->tx_size_1023, &nsd->tx_size_1023);
 956                 i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
 957                                    I40E_GLPRT_PTC1522L(hw->port),
 958                                    pf->stat_offsets_loaded,
 959                                    &osd->tx_size_1522, &nsd->tx_size_1522);
 960                 i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
 961                                    I40E_GLPRT_PTC9522L(hw->port),
 962                                    pf->stat_offsets_loaded,
 963                                    &osd->tx_size_big, &nsd->tx_size_big);
 964
 965                 i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
 966                                    pf->stat_offsets_loaded,
 967                                    &osd->rx_undersize, &nsd->rx_undersize);
 968                 i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
 969                                    pf->stat_offsets_loaded,
 970                                    &osd->rx_fragments, &nsd->rx_fragments);
 971                 i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
 972                                    pf->stat_offsets_loaded,
 973                                    &osd->rx_oversize, &nsd->rx_oversize);
 974                 i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
 975                                    pf->stat_offsets_loaded,
 976                                    &osd->rx_jabber, &nsd->rx_jabber);
 977
 978                 val = rd32(hw, I40E_PRTPM_EEE_STAT);
 979                 nsd->tx_lpi_status =
 980                                (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
 981                                 I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
 982                 nsd->rx_lpi_status =
 983                                (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
 984                                 I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
 985                 i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
 986                                    pf->stat_offsets_loaded,
 987                                    &osd->tx_lpi_count, &nsd->tx_lpi_count);
 988                 i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
 989                                    pf->stat_offsets_loaded,
 990                                    &osd->rx_lpi_count, &nsd->rx_lpi_count);
 991         }
 992
 993         pf->stat_offsets_loaded = true;
 994 }
 995
 996 /**
 997  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
 998  * @vsi: the VSI to be searched
 999  * @macaddr: the MAC address
1000  * @vlan: the vlan
1001  * @is_vf: make sure its a vf filter, else doesn't matter
1002  * @is_netdev: make sure its a netdev filter, else doesn't matter
1003  *
1004  * Returns ptr to the filter object or NULL
1005  **/
1006 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1007                                                 u8 *macaddr, s16 vlan,
1008                                                 bool is_vf, bool is_netdev)
1009 {
1010         struct i40e_mac_filter *f;
1011
1012         if (!vsi || !macaddr)
1013                 return NULL;
1014
1015         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1016                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1017                     (vlan == f->vlan)    &&
1018                     (!is_vf || f->is_vf) &&
1019                     (!is_netdev || f->is_netdev))
1020                         return f;
1021         }
1022         return NULL;
1023 }
1024
1025 /**
1026  * i40e_find_mac - Find a mac addr in the macvlan filters list
1027  * @vsi: the VSI to be searched
1028  * @macaddr: the MAC address we are searching for
1029  * @is_vf: make sure its a vf filter, else doesn't matter
1030  * @is_netdev: make sure its a netdev filter, else doesn't matter
1031  *
1032  * Returns the first filter with the provided MAC address or NULL if
1033  * MAC address was not found
1034  **/
1035 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1036                                       bool is_vf, bool is_netdev)
1037 {
1038         struct i40e_mac_filter *f;
1039
1040         if (!vsi || !macaddr)
1041                 return NULL;
1042
1043         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1044                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1045                     (!is_vf || f->is_vf) &&
1046                     (!is_netdev || f->is_netdev))
1047                         return f;
1048         }
1049         return NULL;
1050 }
1051
1052 /**
1053  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1054  * @vsi: the VSI to be searched
1055  *
1056  * Returns true if VSI is in vlan mode or false otherwise
1057  **/
1058 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1059 {
1060         struct i40e_mac_filter *f;
1061
1062         /* Only -1 for all the filters denotes not in vlan mode
1063          * so we have to go through all the list in order to make sure
1064          */
1065         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1066                 if (f->vlan >= 0)
1067                         return true;
1068         }
1069
1070         return false;
1071 }
1072
1073 /**
1074  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1075  * @vsi: the VSI to be searched
1076  * @macaddr: the mac address to be filtered
1077  * @is_vf: true if it is a vf
1078  * @is_netdev: true if it is a netdev
1079  *
1080  * Goes through all the macvlan filters and adds a
1081  * macvlan filter for each unique vlan that already exists
1082  *
1083  * Returns first filter found on success, else NULL
1084  **/
1085 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1086                                              bool is_vf, bool is_netdev)
1087 {
1088         struct i40e_mac_filter *f;
1089
1090         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1091                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1092                                       is_vf, is_netdev)) {
1093                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1094                                              is_vf, is_netdev))
1095                                 return NULL;
1096                 }
1097         }
1098
1099         return list_first_entry_or_null(&vsi->mac_filter_list,
1100                                         struct i40e_mac_filter, list);
1101 }
1102
1103 /**
1104  * i40e_add_filter - Add a mac/vlan filter to the VSI
1105  * @vsi: the VSI to be searched
1106  * @macaddr: the MAC address
1107  * @vlan: the vlan
1108  * @is_vf: make sure its a vf filter, else doesn't matter
1109  * @is_netdev: make sure its a netdev filter, else doesn't matter
1110  *
1111  * Returns ptr to the filter object or NULL when no memory available.
1112  **/
1113 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1114                                         u8 *macaddr, s16 vlan,
1115                                         bool is_vf, bool is_netdev)
1116 {
1117         struct i40e_mac_filter *f;
1118
1119         if (!vsi || !macaddr)
1120                 return NULL;
1121
1122         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1123         if (!f) {
1124                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1125                 if (!f)
1126                         goto add_filter_out;
1127
1128                 memcpy(f->macaddr, macaddr, ETH_ALEN);
1129                 f->vlan = vlan;
1130                 f->changed = true;
1131
1132                 INIT_LIST_HEAD(&f->list);
1133                 list_add(&f->list, &vsi->mac_filter_list);
1134         }
1135
1136         /* increment counter and add a new flag if needed */
1137         if (is_vf) {
1138                 if (!f->is_vf) {
1139                         f->is_vf = true;
1140                         f->counter++;
1141                 }
1142         } else if (is_netdev) {
1143                 if (!f->is_netdev) {
1144                         f->is_netdev = true;
1145                         f->counter++;
1146                 }
1147         } else {
1148                 f->counter++;
1149         }
1150
1151         /* changed tells sync_filters_subtask to
1152          * push the filter down to the firmware
1153          */
1154         if (f->changed) {
1155                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1156                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1157         }
1158
1159 add_filter_out:
1160         return f;
1161 }
1162
1163 /**
1164  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1165  * @vsi: the VSI to be searched
1166  * @macaddr: the MAC address
1167  * @vlan: the vlan
1168  * @is_vf: make sure it's a vf filter, else doesn't matter
1169  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1170  **/
1171 void i40e_del_filter(struct i40e_vsi *vsi,
1172                      u8 *macaddr, s16 vlan,
1173                      bool is_vf, bool is_netdev)
1174 {
1175         struct i40e_mac_filter *f;
1176
1177         if (!vsi || !macaddr)
1178                 return;
1179
1180         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1181         if (!f || f->counter == 0)
1182                 return;
1183
1184         if (is_vf) {
1185                 if (f->is_vf) {
1186                         f->is_vf = false;
1187                         f->counter--;
1188                 }
1189         } else if (is_netdev) {
1190                 if (f->is_netdev) {
1191                         f->is_netdev = false;
1192                         f->counter--;
1193                 }
1194         } else {
1195                 /* make sure we don't remove a filter in use by vf or netdev */
1196                 int min_f = 0;
1197                 min_f += (f->is_vf ? 1 : 0);
1198                 min_f += (f->is_netdev ? 1 : 0);
1199
1200                 if (f->counter > min_f)
1201                         f->counter--;
1202         }
1203
1204         /* counter == 0 tells sync_filters_subtask to
1205          * remove the filter from the firmware's list
1206          */
1207         if (f->counter == 0) {
1208                 f->changed = true;
1209                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1210                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1211         }
1212 }
1213
1214 /**
1215  * i40e_set_mac - NDO callback to set mac address
1216  * @netdev: network interface device structure
1217  * @p: pointer to an address structure
1218  *
1219  * Returns 0 on success, negative on failure
1220  **/
1221 static int i40e_set_mac(struct net_device *netdev, void *p)
1222 {
1223         struct i40e_netdev_priv *np = netdev_priv(netdev);
1224         struct i40e_vsi *vsi = np->vsi;
1225         struct sockaddr *addr = p;
1226         struct i40e_mac_filter *f;
1227
1228         if (!is_valid_ether_addr(addr->sa_data))
1229                 return -EADDRNOTAVAIL;
1230
1231         netdev_info(netdev, "set mac address=%pM\n", addr->sa_data);
1232
1233         if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
1234                 return 0;
1235
1236         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1237             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1238                 return -EADDRNOTAVAIL;
1239
1240         if (vsi->type == I40E_VSI_MAIN) {
1241                 i40e_status ret;
1242                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1243                                                 I40E_AQC_WRITE_TYPE_LAA_ONLY,
1244                                                 addr->sa_data, NULL);
1245                 if (ret) {
1246                         netdev_info(netdev,
1247                                     "Addr change for Main VSI failed: %d\n",
1248                                     ret);
1249                         return -EADDRNOTAVAIL;
1250                 }
1251
1252                 memcpy(vsi->back->hw.mac.addr, addr->sa_data, netdev->addr_len);
1253         }
1254
1255         /* In order to be sure to not drop any packets, add the new address
1256          * then delete the old one.
1257          */
1258         f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY, false, false);
1259         if (!f)
1260                 return -ENOMEM;
1261
1262         i40e_sync_vsi_filters(vsi);
1263         i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY, false, false);
1264         i40e_sync_vsi_filters(vsi);
1265
1266         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1267
1268         return 0;
1269 }
1270
1271 /**
1272  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1273  * @vsi: the VSI being setup
1274  * @ctxt: VSI context structure
1275  * @enabled_tc: Enabled TCs bitmap
1276  * @is_add: True if called before Add VSI
1277  *
1278  * Setup VSI queue mapping for enabled traffic classes.
1279  **/
1280 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1281                                      struct i40e_vsi_context *ctxt,
1282                                      u8 enabled_tc,
1283                                      bool is_add)
1284 {
1285         struct i40e_pf *pf = vsi->back;
1286         u16 sections = 0;
1287         u8 netdev_tc = 0;
1288         u16 numtc = 0;
1289         u16 qcount;
1290         u8 offset;
1291         u16 qmap;
1292         int i;
1293         u16 num_tc_qps = 0;
1294
1295         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1296         offset = 0;
1297
1298         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1299                 /* Find numtc from enabled TC bitmap */
1300                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1301                         if (enabled_tc & (1 << i)) /* TC is enabled */
1302                                 numtc++;
1303                 }
1304                 if (!numtc) {
1305                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1306                         numtc = 1;
1307                 }
1308         } else {
1309                 /* At least TC0 is enabled in case of non-DCB case */
1310                 numtc = 1;
1311         }
1312
1313         vsi->tc_config.numtc = numtc;
1314         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1315         /* Number of queues per enabled TC */
1316         num_tc_qps = rounddown_pow_of_two(vsi->alloc_queue_pairs/numtc);
1317         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1318
1319         /* Setup queue offset/count for all TCs for given VSI */
1320         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1321                 /* See if the given TC is enabled for the given VSI */
1322                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1323                         int pow, num_qps;
1324
1325                         switch (vsi->type) {
1326                         case I40E_VSI_MAIN:
1327                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1328                                 break;
1329                         case I40E_VSI_FDIR:
1330                         case I40E_VSI_SRIOV:
1331                         case I40E_VSI_VMDQ2:
1332                         default:
1333                                 qcount = num_tc_qps;
1334                                 WARN_ON(i != 0);
1335                                 break;
1336                         }
1337                         vsi->tc_config.tc_info[i].qoffset = offset;
1338                         vsi->tc_config.tc_info[i].qcount = qcount;
1339
1340                         /* find the power-of-2 of the number of queue pairs */
1341                         num_qps = qcount;
1342                         pow = 0;
1343                         while (num_qps && ((1 << pow) < qcount)) {
1344                                 pow++;
1345                                 num_qps >>= 1;
1346                         }
1347
1348                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1349                         qmap =
1350                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1351                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1352
1353                         offset += qcount;
1354                 } else {
1355                         /* TC is not enabled so set the offset to
1356                          * default queue and allocate one queue
1357                          * for the given TC.
1358                          */
1359                         vsi->tc_config.tc_info[i].qoffset = 0;
1360                         vsi->tc_config.tc_info[i].qcount = 1;
1361                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1362
1363                         qmap = 0;
1364                 }
1365                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1366         }
1367
1368         /* Set actual Tx/Rx queue pairs */
1369         vsi->num_queue_pairs = offset;
1370
1371         /* Scheduler section valid can only be set for ADD VSI */
1372         if (is_add) {
1373                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1374
1375                 ctxt->info.up_enable_bits = enabled_tc;
1376         }
1377         if (vsi->type == I40E_VSI_SRIOV) {
1378                 ctxt->info.mapping_flags |=
1379                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1380                 for (i = 0; i < vsi->num_queue_pairs; i++)
1381                         ctxt->info.queue_mapping[i] =
1382                                                cpu_to_le16(vsi->base_queue + i);
1383         } else {
1384                 ctxt->info.mapping_flags |=
1385                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1386                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1387         }
1388         ctxt->info.valid_sections |= cpu_to_le16(sections);
1389 }
1390
1391 /**
1392  * i40e_set_rx_mode - NDO callback to set the netdev filters
1393  * @netdev: network interface device structure
1394  **/
1395 static void i40e_set_rx_mode(struct net_device *netdev)
1396 {
1397         struct i40e_netdev_priv *np = netdev_priv(netdev);
1398         struct i40e_mac_filter *f, *ftmp;
1399         struct i40e_vsi *vsi = np->vsi;
1400         struct netdev_hw_addr *uca;
1401         struct netdev_hw_addr *mca;
1402         struct netdev_hw_addr *ha;
1403
1404         /* add addr if not already in the filter list */
1405         netdev_for_each_uc_addr(uca, netdev) {
1406                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1407                         if (i40e_is_vsi_in_vlan(vsi))
1408                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1409                                                      false, true);
1410                         else
1411                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1412                                                 false, true);
1413                 }
1414         }
1415
1416         netdev_for_each_mc_addr(mca, netdev) {
1417                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1418                         if (i40e_is_vsi_in_vlan(vsi))
1419                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1420                                                      false, true);
1421                         else
1422                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1423                                                 false, true);
1424                 }
1425         }
1426
1427         /* remove filter if not in netdev list */
1428         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1429                 bool found = false;
1430
1431                 if (!f->is_netdev)
1432                         continue;
1433
1434                 if (is_multicast_ether_addr(f->macaddr)) {
1435                         netdev_for_each_mc_addr(mca, netdev) {
1436                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1437                                         found = true;
1438                                         break;
1439                                 }
1440                         }
1441                 } else {
1442                         netdev_for_each_uc_addr(uca, netdev) {
1443                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1444                                         found = true;
1445                                         break;
1446                                 }
1447                         }
1448
1449                         for_each_dev_addr(netdev, ha) {
1450                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1451                                         found = true;
1452                                         break;
1453                                 }
1454                         }
1455                 }
1456                 if (!found)
1457                         i40e_del_filter(
1458                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1459         }
1460
1461         /* check for other flag changes */
1462         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1463                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1464                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1465         }
1466 }
1467
1468 /**
1469  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1470  * @vsi: ptr to the VSI
1471  *
1472  * Push any outstanding VSI filter changes through the AdminQ.
1473  *
1474  * Returns 0 or error value
1475  **/
1476 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1477 {
1478         struct i40e_mac_filter *f, *ftmp;
1479         bool promisc_forced_on = false;
1480         bool add_happened = false;
1481         int filter_list_len = 0;
1482         u32 changed_flags = 0;
1483         i40e_status aq_ret = 0;
1484         struct i40e_pf *pf;
1485         int num_add = 0;
1486         int num_del = 0;
1487         u16 cmd_flags;
1488
1489         /* empty array typed pointers, kcalloc later */
1490         struct i40e_aqc_add_macvlan_element_data *add_list;
1491         struct i40e_aqc_remove_macvlan_element_data *del_list;
1492
1493         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1494                 usleep_range(1000, 2000);
1495         pf = vsi->back;
1496
1497         if (vsi->netdev) {
1498                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1499                 vsi->current_netdev_flags = vsi->netdev->flags;
1500         }
1501
1502         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1503                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1504
1505                 filter_list_len = pf->hw.aq.asq_buf_size /
1506                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1507                 del_list = kcalloc(filter_list_len,
1508                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1509                             GFP_KERNEL);
1510                 if (!del_list)
1511                         return -ENOMEM;
1512
1513                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1514                         if (!f->changed)
1515                                 continue;
1516
1517                         if (f->counter != 0)
1518                                 continue;
1519                         f->changed = false;
1520                         cmd_flags = 0;
1521
1522                         /* add to delete list */
1523                         memcpy(del_list[num_del].mac_addr,
1524                                f->macaddr, ETH_ALEN);
1525                         del_list[num_del].vlan_tag =
1526                                 cpu_to_le16((u16)(f->vlan ==
1527                                             I40E_VLAN_ANY ? 0 : f->vlan));
1528
1529                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1530                         del_list[num_del].flags = cmd_flags;
1531                         num_del++;
1532
1533                         /* unlink from filter list */
1534                         list_del(&f->list);
1535                         kfree(f);
1536
1537                         /* flush a full buffer */
1538                         if (num_del == filter_list_len) {
1539                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1540                                             vsi->seid, del_list, num_del,
1541                                             NULL);
1542                                 num_del = 0;
1543                                 memset(del_list, 0, sizeof(*del_list));
1544
1545                                 if (aq_ret)
1546                                         dev_info(&pf->pdev->dev,
1547                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1548                                                  aq_ret,
1549                                                  pf->hw.aq.asq_last_status);
1550                         }
1551                 }
1552                 if (num_del) {
1553                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1554                                                      del_list, num_del, NULL);
1555                         num_del = 0;
1556
1557                         if (aq_ret)
1558                                 dev_info(&pf->pdev->dev,
1559                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1560                                          aq_ret, pf->hw.aq.asq_last_status);
1561                 }
1562
1563                 kfree(del_list);
1564                 del_list = NULL;
1565
1566                 /* do all the adds now */
1567                 filter_list_len = pf->hw.aq.asq_buf_size /
1568                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1569                 add_list = kcalloc(filter_list_len,
1570                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1571                                GFP_KERNEL);
1572                 if (!add_list)
1573                         return -ENOMEM;
1574
1575                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1576                         if (!f->changed)
1577                                 continue;
1578
1579                         if (f->counter == 0)
1580                                 continue;
1581                         f->changed = false;
1582                         add_happened = true;
1583                         cmd_flags = 0;
1584
1585                         /* add to add array */
1586                         memcpy(add_list[num_add].mac_addr,
1587                                f->macaddr, ETH_ALEN);
1588                         add_list[num_add].vlan_tag =
1589                                 cpu_to_le16(
1590                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1591                         add_list[num_add].queue_number = 0;
1592
1593                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1594                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1595                         num_add++;
1596
1597                         /* flush a full buffer */
1598                         if (num_add == filter_list_len) {
1599                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1600                                                              add_list, num_add,
1601                                                              NULL);
1602                                 num_add = 0;
1603
1604                                 if (aq_ret)
1605                                         break;
1606                                 memset(add_list, 0, sizeof(*add_list));
1607                         }
1608                 }
1609                 if (num_add) {
1610                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1611                                                      add_list, num_add, NULL);
1612                         num_add = 0;
1613                 }
1614                 kfree(add_list);
1615                 add_list = NULL;
1616
1617                 if (add_happened && (!aq_ret)) {
1618                         /* do nothing */;
1619                 } else if (add_happened && (aq_ret)) {
1620                         dev_info(&pf->pdev->dev,
1621                                  "add filter failed, err %d, aq_err %d\n",
1622                                  aq_ret, pf->hw.aq.asq_last_status);
1623                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1624                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1625                                       &vsi->state)) {
1626                                 promisc_forced_on = true;
1627                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1628                                         &vsi->state);
1629                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1630                         }
1631                 }
1632         }
1633
1634         /* check for changes in promiscuous modes */
1635         if (changed_flags & IFF_ALLMULTI) {
1636                 bool cur_multipromisc;
1637                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1638                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1639                                                                vsi->seid,
1640                                                                cur_multipromisc,
1641                                                                NULL);
1642                 if (aq_ret)
1643                         dev_info(&pf->pdev->dev,
1644                                  "set multi promisc failed, err %d, aq_err %d\n",
1645                                  aq_ret, pf->hw.aq.asq_last_status);
1646         }
1647         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1648                 bool cur_promisc;
1649                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1650                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1651                                         &vsi->state));
1652                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1653                                                              vsi->seid,
1654                                                              cur_promisc, NULL);
1655                 if (aq_ret)
1656                         dev_info(&pf->pdev->dev,
1657                                  "set uni promisc failed, err %d, aq_err %d\n",
1658                                  aq_ret, pf->hw.aq.asq_last_status);
1659                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1660                                                    vsi->seid,
1661                                                    cur_promisc, NULL);
1662                 if (aq_ret)
1663                         dev_info(&pf->pdev->dev,
1664                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1665                                  aq_ret, pf->hw.aq.asq_last_status);
1666         }
1667
1668         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1669         return 0;
1670 }
1671
1672 /**
1673  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1674  * @pf: board private structure
1675  **/
1676 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1677 {
1678         int v;
1679
1680         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1681                 return;
1682         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1683
1684         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
1685                 if (pf->vsi[v] &&
1686                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1687                         i40e_sync_vsi_filters(pf->vsi[v]);
1688         }
1689 }
1690
1691 /**
1692  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1693  * @netdev: network interface device structure
1694  * @new_mtu: new value for maximum frame size
1695  *
1696  * Returns 0 on success, negative on failure
1697  **/
1698 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1699 {
1700         struct i40e_netdev_priv *np = netdev_priv(netdev);
1701         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
1702         struct i40e_vsi *vsi = np->vsi;
1703
1704         /* MTU < 68 is an error and causes problems on some kernels */
1705         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1706                 return -EINVAL;
1707
1708         netdev_info(netdev, "changing MTU from %d to %d\n",
1709                     netdev->mtu, new_mtu);
1710         netdev->mtu = new_mtu;
1711         if (netif_running(netdev))
1712                 i40e_vsi_reinit_locked(vsi);
1713
1714         return 0;
1715 }
1716
1717 /**
1718  * i40e_ioctl - Access the hwtstamp interface
1719  * @netdev: network interface device structure
1720  * @ifr: interface request data
1721  * @cmd: ioctl command
1722  **/
1723 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1724 {
1725         struct i40e_netdev_priv *np = netdev_priv(netdev);
1726         struct i40e_pf *pf = np->vsi->back;
1727
1728         switch (cmd) {
1729         case SIOCGHWTSTAMP:
1730                 return i40e_ptp_get_ts_config(pf, ifr);
1731         case SIOCSHWTSTAMP:
1732                 return i40e_ptp_set_ts_config(pf, ifr);
1733         default:
1734                 return -EOPNOTSUPP;
1735         }
1736 }
1737
1738 /**
1739  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1740  * @vsi: the vsi being adjusted
1741  **/
1742 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1743 {
1744         struct i40e_vsi_context ctxt;
1745         i40e_status ret;
1746
1747         if ((vsi->info.valid_sections &
1748              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1749             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1750                 return;  /* already enabled */
1751
1752         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1753         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1754                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1755
1756         ctxt.seid = vsi->seid;
1757         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1758         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1759         if (ret) {
1760                 dev_info(&vsi->back->pdev->dev,
1761                          "%s: update vsi failed, aq_err=%d\n",
1762                          __func__, vsi->back->hw.aq.asq_last_status);
1763         }
1764 }
1765
1766 /**
1767  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1768  * @vsi: the vsi being adjusted
1769  **/
1770 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1771 {
1772         struct i40e_vsi_context ctxt;
1773         i40e_status ret;
1774
1775         if ((vsi->info.valid_sections &
1776              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1777             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1778              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1779                 return;  /* already disabled */
1780
1781         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1782         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1783                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1784
1785         ctxt.seid = vsi->seid;
1786         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1787         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1788         if (ret) {
1789                 dev_info(&vsi->back->pdev->dev,
1790                          "%s: update vsi failed, aq_err=%d\n",
1791                          __func__, vsi->back->hw.aq.asq_last_status);
1792         }
1793 }
1794
1795 /**
1796  * i40e_vlan_rx_register - Setup or shutdown vlan offload
1797  * @netdev: network interface to be adjusted
1798  * @features: netdev features to test if VLAN offload is enabled or not
1799  **/
1800 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
1801 {
1802         struct i40e_netdev_priv *np = netdev_priv(netdev);
1803         struct i40e_vsi *vsi = np->vsi;
1804
1805         if (features & NETIF_F_HW_VLAN_CTAG_RX)
1806                 i40e_vlan_stripping_enable(vsi);
1807         else
1808                 i40e_vlan_stripping_disable(vsi);
1809 }
1810
1811 /**
1812  * i40e_vsi_add_vlan - Add vsi membership for given vlan
1813  * @vsi: the vsi being configured
1814  * @vid: vlan id to be added (0 = untagged only , -1 = any)
1815  **/
1816 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
1817 {
1818         struct i40e_mac_filter *f, *add_f;
1819         bool is_netdev, is_vf;
1820
1821         is_vf = (vsi->type == I40E_VSI_SRIOV);
1822         is_netdev = !!(vsi->netdev);
1823
1824         if (is_netdev) {
1825                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
1826                                         is_vf, is_netdev);
1827                 if (!add_f) {
1828                         dev_info(&vsi->back->pdev->dev,
1829                                  "Could not add vlan filter %d for %pM\n",
1830                                  vid, vsi->netdev->dev_addr);
1831                         return -ENOMEM;
1832                 }
1833         }
1834
1835         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1836                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1837                 if (!add_f) {
1838                         dev_info(&vsi->back->pdev->dev,
1839                                  "Could not add vlan filter %d for %pM\n",
1840                                  vid, f->macaddr);
1841                         return -ENOMEM;
1842                 }
1843         }
1844
1845         /* Now if we add a vlan tag, make sure to check if it is the first
1846          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
1847          * with 0, so we now accept untagged and specified tagged traffic
1848          * (and not any taged and untagged)
1849          */
1850         if (vid > 0) {
1851                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
1852                                                   I40E_VLAN_ANY,
1853                                                   is_vf, is_netdev)) {
1854                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
1855                                         I40E_VLAN_ANY, is_vf, is_netdev);
1856                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
1857                                                 is_vf, is_netdev);
1858                         if (!add_f) {
1859                                 dev_info(&vsi->back->pdev->dev,
1860                                          "Could not add filter 0 for %pM\n",
1861                                          vsi->netdev->dev_addr);
1862                                 return -ENOMEM;
1863                         }
1864                 }
1865         }
1866
1867         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
1868         if (vid > 0 && !vsi->info.pvid) {
1869                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1870                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1871                                              is_vf, is_netdev)) {
1872                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1873                                                 is_vf, is_netdev);
1874                                 add_f = i40e_add_filter(vsi, f->macaddr,
1875                                                         0, is_vf, is_netdev);
1876                                 if (!add_f) {
1877                                         dev_info(&vsi->back->pdev->dev,
1878                                                  "Could not add filter 0 for %pM\n",
1879                                                  f->macaddr);
1880                                         return -ENOMEM;
1881                                 }
1882                         }
1883                 }
1884         }
1885
1886         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1887             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1888                 return 0;
1889
1890         return i40e_sync_vsi_filters(vsi);
1891 }
1892
1893 /**
1894  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
1895  * @vsi: the vsi being configured
1896  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
1897  *
1898  * Return: 0 on success or negative otherwise
1899  **/
1900 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
1901 {
1902         struct net_device *netdev = vsi->netdev;
1903         struct i40e_mac_filter *f, *add_f;
1904         bool is_vf, is_netdev;
1905         int filter_count = 0;
1906
1907         is_vf = (vsi->type == I40E_VSI_SRIOV);
1908         is_netdev = !!(netdev);
1909
1910         if (is_netdev)
1911                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
1912
1913         list_for_each_entry(f, &vsi->mac_filter_list, list)
1914                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1915
1916         /* go through all the filters for this VSI and if there is only
1917          * vid == 0 it means there are no other filters, so vid 0 must
1918          * be replaced with -1. This signifies that we should from now
1919          * on accept any traffic (with any tag present, or untagged)
1920          */
1921         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1922                 if (is_netdev) {
1923                         if (f->vlan &&
1924                             ether_addr_equal(netdev->dev_addr, f->macaddr))
1925                                 filter_count++;
1926                 }
1927
1928                 if (f->vlan)
1929                         filter_count++;
1930         }
1931
1932         if (!filter_count && is_netdev) {
1933                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
1934                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1935                                     is_vf, is_netdev);
1936                 if (!f) {
1937                         dev_info(&vsi->back->pdev->dev,
1938                                  "Could not add filter %d for %pM\n",
1939                                  I40E_VLAN_ANY, netdev->dev_addr);
1940                         return -ENOMEM;
1941                 }
1942         }
1943
1944         if (!filter_count) {
1945                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1946                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
1947                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1948                                             is_vf, is_netdev);
1949                         if (!add_f) {
1950                                 dev_info(&vsi->back->pdev->dev,
1951                                          "Could not add filter %d for %pM\n",
1952                                          I40E_VLAN_ANY, f->macaddr);
1953                                 return -ENOMEM;
1954                         }
1955                 }
1956         }
1957
1958         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1959             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1960                 return 0;
1961
1962         return i40e_sync_vsi_filters(vsi);
1963 }
1964
1965 /**
1966  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
1967  * @netdev: network interface to be adjusted
1968  * @vid: vlan id to be added
1969  *
1970  * net_device_ops implementation for adding vlan ids
1971  **/
1972 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
1973                                 __always_unused __be16 proto, u16 vid)
1974 {
1975         struct i40e_netdev_priv *np = netdev_priv(netdev);
1976         struct i40e_vsi *vsi = np->vsi;
1977         int ret = 0;
1978
1979         if (vid > 4095)
1980                 return -EINVAL;
1981
1982         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
1983
1984         /* If the network stack called us with vid = 0 then
1985          * it is asking to receive priority tagged packets with
1986          * vlan id 0.  Our HW receives them by default when configured
1987          * to receive untagged packets so there is no need to add an
1988          * extra filter for vlan 0 tagged packets.
1989          */
1990         if (vid)
1991                 ret = i40e_vsi_add_vlan(vsi, vid);
1992
1993         if (!ret && (vid < VLAN_N_VID))
1994                 set_bit(vid, vsi->active_vlans);
1995
1996         return ret;
1997 }
1998
1999 /**
2000  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2001  * @netdev: network interface to be adjusted
2002  * @vid: vlan id to be removed
2003  *
2004  * net_device_ops implementation for removing vlan ids
2005  **/
2006 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2007                                  __always_unused __be16 proto, u16 vid)
2008 {
2009         struct i40e_netdev_priv *np = netdev_priv(netdev);
2010         struct i40e_vsi *vsi = np->vsi;
2011
2012         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2013
2014         /* return code is ignored as there is nothing a user
2015          * can do about failure to remove and a log message was
2016          * already printed from the other function
2017          */
2018         i40e_vsi_kill_vlan(vsi, vid);
2019
2020         clear_bit(vid, vsi->active_vlans);
2021
2022         return 0;
2023 }
2024
2025 /**
2026  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2027  * @vsi: the vsi being brought back up
2028  **/
2029 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2030 {
2031         u16 vid;
2032
2033         if (!vsi->netdev)
2034                 return;
2035
2036         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2037
2038         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2039                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2040                                      vid);
2041 }
2042
2043 /**
2044  * i40e_vsi_add_pvid - Add pvid for the VSI
2045  * @vsi: the vsi being adjusted
2046  * @vid: the vlan id to set as a PVID
2047  **/
2048 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2049 {
2050         struct i40e_vsi_context ctxt;
2051         i40e_status aq_ret;
2052
2053         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2054         vsi->info.pvid = cpu_to_le16(vid);
2055         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2056                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2057                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2058
2059         ctxt.seid = vsi->seid;
2060         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2061         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2062         if (aq_ret) {
2063                 dev_info(&vsi->back->pdev->dev,
2064                          "%s: update vsi failed, aq_err=%d\n",
2065                          __func__, vsi->back->hw.aq.asq_last_status);
2066                 return -ENOENT;
2067         }
2068
2069         return 0;
2070 }
2071
2072 /**
2073  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2074  * @vsi: the vsi being adjusted
2075  *
2076  * Just use the vlan_rx_register() service to put it back to normal
2077  **/
2078 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2079 {
2080         i40e_vlan_stripping_disable(vsi);
2081
2082         vsi->info.pvid = 0;
2083 }
2084
2085 /**
2086  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2087  * @vsi: ptr to the VSI
2088  *
2089  * If this function returns with an error, then it's possible one or
2090  * more of the rings is populated (while the rest are not).  It is the
2091  * callers duty to clean those orphaned rings.
2092  *
2093  * Return 0 on success, negative on failure
2094  **/
2095 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2096 {
2097         int i, err = 0;
2098
2099         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2100                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2101
2102         return err;
2103 }
2104
2105 /**
2106  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2107  * @vsi: ptr to the VSI
2108  *
2109  * Free VSI's transmit software resources
2110  **/
2111 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2112 {
2113         int i;
2114
2115         if (!vsi->tx_rings)
2116                 return;
2117
2118         for (i = 0; i < vsi->num_queue_pairs; i++)
2119                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2120                         i40e_free_tx_resources(vsi->tx_rings[i]);
2121 }
2122
2123 /**
2124  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2125  * @vsi: ptr to the VSI
2126  *
2127  * If this function returns with an error, then it's possible one or
2128  * more of the rings is populated (while the rest are not).  It is the
2129  * callers duty to clean those orphaned rings.
2130  *
2131  * Return 0 on success, negative on failure
2132  **/
2133 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2134 {
2135         int i, err = 0;
2136
2137         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2138                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2139         return err;
2140 }
2141
2142 /**
2143  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2144  * @vsi: ptr to the VSI
2145  *
2146  * Free all receive software resources
2147  **/
2148 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2149 {
2150         int i;
2151
2152         if (!vsi->rx_rings)
2153                 return;
2154
2155         for (i = 0; i < vsi->num_queue_pairs; i++)
2156                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2157                         i40e_free_rx_resources(vsi->rx_rings[i]);
2158 }
2159
2160 /**
2161  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2162  * @ring: The Tx ring to configure
2163  *
2164  * Configure the Tx descriptor ring in the HMC context.
2165  **/
2166 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2167 {
2168         struct i40e_vsi *vsi = ring->vsi;
2169         u16 pf_q = vsi->base_queue + ring->queue_index;
2170         struct i40e_hw *hw = &vsi->back->hw;
2171         struct i40e_hmc_obj_txq tx_ctx;
2172         i40e_status err = 0;
2173         u32 qtx_ctl = 0;
2174
2175         /* some ATR related tx ring init */
2176         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2177                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2178                 ring->atr_count = 0;
2179         } else {
2180                 ring->atr_sample_rate = 0;
2181         }
2182
2183         /* initialize XPS */
2184         if (ring->q_vector && ring->netdev &&
2185             vsi->tc_config.numtc <= 1 &&
2186             !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2187                 netif_set_xps_queue(ring->netdev,
2188                                     &ring->q_vector->affinity_mask,
2189                                     ring->queue_index);
2190
2191         /* clear the context structure first */
2192         memset(&tx_ctx, 0, sizeof(tx_ctx));
2193
2194         tx_ctx.new_context = 1;
2195         tx_ctx.base = (ring->dma / 128);
2196         tx_ctx.qlen = ring->count;
2197         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2198                                                I40E_FLAG_FD_ATR_ENABLED));
2199         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2200         /* FDIR VSI tx ring can still use RS bit and writebacks */
2201         if (vsi->type != I40E_VSI_FDIR)
2202                 tx_ctx.head_wb_ena = 1;
2203         tx_ctx.head_wb_addr = ring->dma +
2204                               (ring->count * sizeof(struct i40e_tx_desc));
2205
2206         /* As part of VSI creation/update, FW allocates certain
2207          * Tx arbitration queue sets for each TC enabled for
2208          * the VSI. The FW returns the handles to these queue
2209          * sets as part of the response buffer to Add VSI,
2210          * Update VSI, etc. AQ commands. It is expected that
2211          * these queue set handles be associated with the Tx
2212          * queues by the driver as part of the TX queue context
2213          * initialization. This has to be done regardless of
2214          * DCB as by default everything is mapped to TC0.
2215          */
2216         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2217         tx_ctx.rdylist_act = 0;
2218
2219         /* clear the context in the HMC */
2220         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2221         if (err) {
2222                 dev_info(&vsi->back->pdev->dev,
2223                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2224                          ring->queue_index, pf_q, err);
2225                 return -ENOMEM;
2226         }
2227
2228         /* set the context in the HMC */
2229         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2230         if (err) {
2231                 dev_info(&vsi->back->pdev->dev,
2232                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2233                          ring->queue_index, pf_q, err);
2234                 return -ENOMEM;
2235         }
2236
2237         /* Now associate this queue with this PCI function */
2238         if (vsi->type == I40E_VSI_VMDQ2)
2239                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2240         else
2241                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2242         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2243                     I40E_QTX_CTL_PF_INDX_MASK);
2244         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2245         i40e_flush(hw);
2246
2247         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2248
2249         /* cache tail off for easier writes later */
2250         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2251
2252         return 0;
2253 }
2254
2255 /**
2256  * i40e_configure_rx_ring - Configure a receive ring context
2257  * @ring: The Rx ring to configure
2258  *
2259  * Configure the Rx descriptor ring in the HMC context.
2260  **/
2261 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2262 {
2263         struct i40e_vsi *vsi = ring->vsi;
2264         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2265         u16 pf_q = vsi->base_queue + ring->queue_index;
2266         struct i40e_hw *hw = &vsi->back->hw;
2267         struct i40e_hmc_obj_rxq rx_ctx;
2268         i40e_status err = 0;
2269
2270         ring->state = 0;
2271
2272         /* clear the context structure first */
2273         memset(&rx_ctx, 0, sizeof(rx_ctx));
2274
2275         ring->rx_buf_len = vsi->rx_buf_len;
2276         ring->rx_hdr_len = vsi->rx_hdr_len;
2277
2278         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2279         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2280
2281         rx_ctx.base = (ring->dma / 128);
2282         rx_ctx.qlen = ring->count;
2283
2284         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2285                 set_ring_16byte_desc_enabled(ring);
2286                 rx_ctx.dsize = 0;
2287         } else {
2288                 rx_ctx.dsize = 1;
2289         }
2290
2291         rx_ctx.dtype = vsi->dtype;
2292         if (vsi->dtype) {
2293                 set_ring_ps_enabled(ring);
2294                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2295                                   I40E_RX_SPLIT_IP      |
2296                                   I40E_RX_SPLIT_TCP_UDP |
2297                                   I40E_RX_SPLIT_SCTP;
2298         } else {
2299                 rx_ctx.hsplit_0 = 0;
2300         }
2301
2302         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2303                                   (chain_len * ring->rx_buf_len));
2304         rx_ctx.tphrdesc_ena = 1;
2305         rx_ctx.tphwdesc_ena = 1;
2306         rx_ctx.tphdata_ena = 1;
2307         rx_ctx.tphhead_ena = 1;
2308         if (hw->revision_id == 0)
2309                 rx_ctx.lrxqthresh = 0;
2310         else
2311                 rx_ctx.lrxqthresh = 2;
2312         rx_ctx.crcstrip = 1;
2313         rx_ctx.l2tsel = 1;
2314         rx_ctx.showiv = 1;
2315         /* set the prefena field to 1 because the manual says to */
2316         rx_ctx.prefena = 1;
2317
2318         /* clear the context in the HMC */
2319         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2320         if (err) {
2321                 dev_info(&vsi->back->pdev->dev,
2322                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2323                          ring->queue_index, pf_q, err);
2324                 return -ENOMEM;
2325         }
2326
2327         /* set the context in the HMC */
2328         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2329         if (err) {
2330                 dev_info(&vsi->back->pdev->dev,
2331                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2332                          ring->queue_index, pf_q, err);
2333                 return -ENOMEM;
2334         }
2335
2336         /* cache tail for quicker writes, and clear the reg before use */
2337         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2338         writel(0, ring->tail);
2339
2340         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2341
2342         return 0;
2343 }
2344
2345 /**
2346  * i40e_vsi_configure_tx - Configure the VSI for Tx
2347  * @vsi: VSI structure describing this set of rings and resources
2348  *
2349  * Configure the Tx VSI for operation.
2350  **/
2351 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2352 {
2353         int err = 0;
2354         u16 i;
2355
2356         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2357                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2358
2359         return err;
2360 }
2361
2362 /**
2363  * i40e_vsi_configure_rx - Configure the VSI for Rx
2364  * @vsi: the VSI being configured
2365  *
2366  * Configure the Rx VSI for operation.
2367  **/
2368 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2369 {
2370         int err = 0;
2371         u16 i;
2372
2373         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2374                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2375                                + ETH_FCS_LEN + VLAN_HLEN;
2376         else
2377                 vsi->max_frame = I40E_RXBUFFER_2048;
2378
2379         /* figure out correct receive buffer length */
2380         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2381                                     I40E_FLAG_RX_PS_ENABLED)) {
2382         case I40E_FLAG_RX_1BUF_ENABLED:
2383                 vsi->rx_hdr_len = 0;
2384                 vsi->rx_buf_len = vsi->max_frame;
2385                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2386                 break;
2387         case I40E_FLAG_RX_PS_ENABLED:
2388                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2389                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2390                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2391                 break;
2392         default:
2393                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2394                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2395                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2396                 break;
2397         }
2398
2399         /* round up for the chip's needs */
2400         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2401                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2402         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2403                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2404
2405         /* set up individual rings */
2406         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2407                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2408
2409         return err;
2410 }
2411
2412 /**
2413  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2414  * @vsi: ptr to the VSI
2415  **/
2416 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2417 {
2418         u16 qoffset, qcount;
2419         int i, n;
2420
2421         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2422                 return;
2423
2424         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2425                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2426                         continue;
2427
2428                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2429                 qcount = vsi->tc_config.tc_info[n].qcount;
2430                 for (i = qoffset; i < (qoffset + qcount); i++) {
2431                         struct i40e_ring *rx_ring = vsi->rx_rings[i];
2432                         struct i40e_ring *tx_ring = vsi->tx_rings[i];
2433                         rx_ring->dcb_tc = n;
2434                         tx_ring->dcb_tc = n;
2435                 }
2436         }
2437 }
2438
2439 /**
2440  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2441  * @vsi: ptr to the VSI
2442  **/
2443 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2444 {
2445         if (vsi->netdev)
2446                 i40e_set_rx_mode(vsi->netdev);
2447 }
2448
2449 /**
2450  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2451  * @vsi: Pointer to the targeted VSI
2452  *
2453  * This function replays the hlist on the hw where all the SB Flow Director
2454  * filters were saved.
2455  **/
2456 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2457 {
2458         struct i40e_fdir_filter *filter;
2459         struct i40e_pf *pf = vsi->back;
2460         struct hlist_node *node;
2461
2462         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2463                 return;
2464
2465         hlist_for_each_entry_safe(filter, node,
2466                                   &pf->fdir_filter_list, fdir_node) {
2467                 i40e_add_del_fdir(vsi, filter, true);
2468         }
2469 }
2470
2471 /**
2472  * i40e_vsi_configure - Set up the VSI for action
2473  * @vsi: the VSI being configured
2474  **/
2475 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2476 {
2477         int err;
2478
2479         i40e_set_vsi_rx_mode(vsi);
2480         i40e_restore_vlan(vsi);
2481         i40e_vsi_config_dcb_rings(vsi);
2482         err = i40e_vsi_configure_tx(vsi);
2483         if (!err)
2484                 err = i40e_vsi_configure_rx(vsi);
2485
2486         return err;
2487 }
2488
2489 /**
2490  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2491  * @vsi: the VSI being configured
2492  **/
2493 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2494 {
2495         struct i40e_pf *pf = vsi->back;
2496         struct i40e_q_vector *q_vector;
2497         struct i40e_hw *hw = &pf->hw;
2498         u16 vector;
2499         int i, q;
2500         u32 val;
2501         u32 qp;
2502
2503         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2504          * and PFINT_LNKLSTn registers, e.g.:
2505          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2506          */
2507         qp = vsi->base_queue;
2508         vector = vsi->base_vector;
2509         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2510                 q_vector = vsi->q_vectors[i];
2511                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2512                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2513                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2514                      q_vector->rx.itr);
2515                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2516                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2517                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2518                      q_vector->tx.itr);
2519
2520                 /* Linked list for the queuepairs assigned to this vector */
2521                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2522                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2523                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2524                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2525                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2526                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2527                               (I40E_QUEUE_TYPE_TX
2528                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2529
2530                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2531
2532                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2533                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2534                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2535                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2536                               (I40E_QUEUE_TYPE_RX
2537                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2538
2539                         /* Terminate the linked list */
2540                         if (q == (q_vector->num_ringpairs - 1))
2541                                 val |= (I40E_QUEUE_END_OF_LIST
2542                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2543
2544                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2545                         qp++;
2546                 }
2547         }
2548
2549         i40e_flush(hw);
2550 }
2551
2552 /**
2553  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2554  * @hw: ptr to the hardware info
2555  **/
2556 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2557 {
2558         u32 val;
2559
2560         /* clear things first */
2561         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2562         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2563
2564         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2565               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2566               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2567               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2568               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2569               I40E_PFINT_ICR0_ENA_TIMESYNC_MASK      |
2570               I40E_PFINT_ICR0_ENA_STORM_DETECT_MASK  |
2571               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2572               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2573               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2574
2575         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2576
2577         /* SW_ITR_IDX = 0, but don't change INTENA */
2578         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2579                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2580
2581         /* OTHER_ITR_IDX = 0 */
2582         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2583 }
2584
2585 /**
2586  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2587  * @vsi: the VSI being configured
2588  **/
2589 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2590 {
2591         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2592         struct i40e_pf *pf = vsi->back;
2593         struct i40e_hw *hw = &pf->hw;
2594         u32 val;
2595
2596         /* set the ITR configuration */
2597         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2598         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2599         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2600         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2601         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2602         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2603
2604         i40e_enable_misc_int_causes(hw);
2605
2606         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2607         wr32(hw, I40E_PFINT_LNKLST0, 0);
2608
2609         /* Associate the queue pair to the vector and enable the queue int */
2610         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2611               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2612               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2613
2614         wr32(hw, I40E_QINT_RQCTL(0), val);
2615
2616         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2617               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2618               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2619
2620         wr32(hw, I40E_QINT_TQCTL(0), val);
2621         i40e_flush(hw);
2622 }
2623
2624 /**
2625  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2626  * @pf: board private structure
2627  **/
2628 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2629 {
2630         struct i40e_hw *hw = &pf->hw;
2631
2632         wr32(hw, I40E_PFINT_DYN_CTL0,
2633              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2634         i40e_flush(hw);
2635 }
2636
2637 /**
2638  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2639  * @pf: board private structure
2640  **/
2641 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2642 {
2643         struct i40e_hw *hw = &pf->hw;
2644         u32 val;
2645
2646         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2647               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2648               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2649
2650         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2651         i40e_flush(hw);
2652 }
2653
2654 /**
2655  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2656  * @vsi: pointer to a vsi
2657  * @vector: enable a particular Hw Interrupt vector
2658  **/
2659 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2660 {
2661         struct i40e_pf *pf = vsi->back;
2662         struct i40e_hw *hw = &pf->hw;
2663         u32 val;
2664
2665         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2666               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2667               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2668         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2669         /* skip the flush */
2670 }
2671
2672 /**
2673  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2674  * @irq: interrupt number
2675  * @data: pointer to a q_vector
2676  **/
2677 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2678 {
2679         struct i40e_q_vector *q_vector = data;
2680
2681         if (!q_vector->tx.ring && !q_vector->rx.ring)
2682                 return IRQ_HANDLED;
2683
2684         napi_schedule(&q_vector->napi);
2685
2686         return IRQ_HANDLED;
2687 }
2688
2689 /**
2690  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2691  * @vsi: the VSI being configured
2692  * @basename: name for the vector
2693  *
2694  * Allocates MSI-X vectors and requests interrupts from the kernel.
2695  **/
2696 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2697 {
2698         int q_vectors = vsi->num_q_vectors;
2699         struct i40e_pf *pf = vsi->back;
2700         int base = vsi->base_vector;
2701         int rx_int_idx = 0;
2702         int tx_int_idx = 0;
2703         int vector, err;
2704
2705         for (vector = 0; vector < q_vectors; vector++) {
2706                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2707
2708                 if (q_vector->tx.ring && q_vector->rx.ring) {
2709                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2710                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2711                         tx_int_idx++;
2712                 } else if (q_vector->rx.ring) {
2713                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2714                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2715                 } else if (q_vector->tx.ring) {
2716                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2717                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2718                 } else {
2719                         /* skip this unused q_vector */
2720                         continue;
2721                 }
2722                 err = request_irq(pf->msix_entries[base + vector].vector,
2723                                   vsi->irq_handler,
2724                                   0,
2725                                   q_vector->name,
2726                                   q_vector);
2727                 if (err) {
2728                         dev_info(&pf->pdev->dev,
2729                                  "%s: request_irq failed, error: %d\n",
2730                                  __func__, err);
2731                         goto free_queue_irqs;
2732                 }
2733                 /* assign the mask for this irq */
2734                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2735                                       &q_vector->affinity_mask);
2736         }
2737
2738         return 0;
2739
2740 free_queue_irqs:
2741         while (vector) {
2742                 vector--;
2743                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2744                                       NULL);
2745                 free_irq(pf->msix_entries[base + vector].vector,
2746                          &(vsi->q_vectors[vector]));
2747         }
2748         return err;
2749 }
2750
2751 /**
2752  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
2753  * @vsi: the VSI being un-configured
2754  **/
2755 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
2756 {
2757         struct i40e_pf *pf = vsi->back;
2758         struct i40e_hw *hw = &pf->hw;
2759         int base = vsi->base_vector;
2760         int i;
2761
2762         for (i = 0; i < vsi->num_queue_pairs; i++) {
2763                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
2764                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
2765         }
2766
2767         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2768                 for (i = vsi->base_vector;
2769                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2770                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
2771
2772                 i40e_flush(hw);
2773                 for (i = 0; i < vsi->num_q_vectors; i++)
2774                         synchronize_irq(pf->msix_entries[i + base].vector);
2775         } else {
2776                 /* Legacy and MSI mode - this stops all interrupt handling */
2777                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
2778                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
2779                 i40e_flush(hw);
2780                 synchronize_irq(pf->pdev->irq);
2781         }
2782 }
2783
2784 /**
2785  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
2786  * @vsi: the VSI being configured
2787  **/
2788 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
2789 {
2790         struct i40e_pf *pf = vsi->back;
2791         int i;
2792
2793         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2794                 for (i = vsi->base_vector;
2795                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2796                         i40e_irq_dynamic_enable(vsi, i);
2797         } else {
2798                 i40e_irq_dynamic_enable_icr0(pf);
2799         }
2800
2801         i40e_flush(&pf->hw);
2802         return 0;
2803 }
2804
2805 /**
2806  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
2807  * @pf: board private structure
2808  **/
2809 static void i40e_stop_misc_vector(struct i40e_pf *pf)
2810 {
2811         /* Disable ICR 0 */
2812         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
2813         i40e_flush(&pf->hw);
2814 }
2815
2816 /**
2817  * i40e_intr - MSI/Legacy and non-queue interrupt handler
2818  * @irq: interrupt number
2819  * @data: pointer to a q_vector
2820  *
2821  * This is the handler used for all MSI/Legacy interrupts, and deals
2822  * with both queue and non-queue interrupts.  This is also used in
2823  * MSIX mode to handle the non-queue interrupts.
2824  **/
2825 static irqreturn_t i40e_intr(int irq, void *data)
2826 {
2827         struct i40e_pf *pf = (struct i40e_pf *)data;
2828         struct i40e_hw *hw = &pf->hw;
2829         irqreturn_t ret = IRQ_NONE;
2830         u32 icr0, icr0_remaining;
2831         u32 val, ena_mask;
2832
2833         icr0 = rd32(hw, I40E_PFINT_ICR0);
2834         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
2835
2836         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
2837         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
2838                 goto enable_intr;
2839
2840         /* if interrupt but no bits showing, must be SWINT */
2841         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
2842             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
2843                 pf->sw_int_count++;
2844
2845         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
2846         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
2847
2848                 /* temporarily disable queue cause for NAPI processing */
2849                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
2850                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
2851                 wr32(hw, I40E_QINT_RQCTL(0), qval);
2852
2853                 qval = rd32(hw, I40E_QINT_TQCTL(0));
2854                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
2855                 wr32(hw, I40E_QINT_TQCTL(0), qval);
2856
2857                 if (!test_bit(__I40E_DOWN, &pf->state))
2858                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
2859         }
2860
2861         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
2862                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2863                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
2864         }
2865
2866         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
2867                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
2868                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
2869         }
2870
2871         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
2872                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
2873                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
2874         }
2875
2876         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
2877                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
2878                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
2879                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
2880                 val = rd32(hw, I40E_GLGEN_RSTAT);
2881                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
2882                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
2883                 if (val == I40E_RESET_CORER) {
2884                         pf->corer_count++;
2885                 } else if (val == I40E_RESET_GLOBR) {
2886                         pf->globr_count++;
2887                 } else if (val == I40E_RESET_EMPR) {
2888                         pf->empr_count++;
2889                         set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
2890                 }
2891         }
2892
2893         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
2894                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
2895                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
2896         }
2897
2898         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
2899                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
2900
2901                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
2902                         ena_mask &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2903                         i40e_ptp_tx_hwtstamp(pf);
2904                         prttsyn_stat &= ~I40E_PRTTSYN_STAT_0_TXTIME_MASK;
2905                 }
2906
2907                 wr32(hw, I40E_PRTTSYN_STAT_0, prttsyn_stat);
2908         }
2909
2910         /* If a critical error is pending we have no choice but to reset the
2911          * device.
2912          * Report and mask out any remaining unexpected interrupts.
2913          */
2914         icr0_remaining = icr0 & ena_mask;
2915         if (icr0_remaining) {
2916                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
2917                          icr0_remaining);
2918                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
2919                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
2920                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
2921                         dev_info(&pf->pdev->dev, "device will be reset\n");
2922                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2923                         i40e_service_event_schedule(pf);
2924                 }
2925                 ena_mask &= ~icr0_remaining;
2926         }
2927         ret = IRQ_HANDLED;
2928
2929 enable_intr:
2930         /* re-enable interrupt causes */
2931         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
2932         if (!test_bit(__I40E_DOWN, &pf->state)) {
2933                 i40e_service_event_schedule(pf);
2934                 i40e_irq_dynamic_enable_icr0(pf);
2935         }
2936
2937         return ret;
2938 }
2939
2940 /**
2941  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
2942  * @tx_ring:  tx ring to clean
2943  * @budget:   how many cleans we're allowed
2944  *
2945  * Returns true if there's any budget left (e.g. the clean is finished)
2946  **/
2947 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
2948 {
2949         struct i40e_vsi *vsi = tx_ring->vsi;
2950         u16 i = tx_ring->next_to_clean;
2951         struct i40e_tx_buffer *tx_buf;
2952         struct i40e_tx_desc *tx_desc;
2953
2954         tx_buf = &tx_ring->tx_bi[i];
2955         tx_desc = I40E_TX_DESC(tx_ring, i);
2956         i -= tx_ring->count;
2957
2958         do {
2959                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
2960
2961                 /* if next_to_watch is not set then there is no work pending */
2962                 if (!eop_desc)
2963                         break;
2964
2965                 /* prevent any other reads prior to eop_desc */
2966                 read_barrier_depends();
2967
2968                 /* if the descriptor isn't done, no work yet to do */
2969                 if (!(eop_desc->cmd_type_offset_bsz &
2970                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
2971                         break;
2972
2973                 /* clear next_to_watch to prevent false hangs */
2974                 tx_buf->next_to_watch = NULL;
2975
2976                 /* unmap skb header data */
2977                 dma_unmap_single(tx_ring->dev,
2978                                  dma_unmap_addr(tx_buf, dma),
2979                                  dma_unmap_len(tx_buf, len),
2980                                  DMA_TO_DEVICE);
2981
2982                 dma_unmap_len_set(tx_buf, len, 0);
2983
2984
2985                 /* move to the next desc and buffer to clean */
2986                 tx_buf++;
2987                 tx_desc++;
2988                 i++;
2989                 if (unlikely(!i)) {
2990                         i -= tx_ring->count;
2991                         tx_buf = tx_ring->tx_bi;
2992                         tx_desc = I40E_TX_DESC(tx_ring, 0);
2993                 }
2994
2995                 /* update budget accounting */
2996                 budget--;
2997         } while (likely(budget));
2998
2999         i += tx_ring->count;
3000         tx_ring->next_to_clean = i;
3001
3002         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3003                 i40e_irq_dynamic_enable(vsi,
3004                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3005         }
3006         return budget > 0;
3007 }
3008
3009 /**
3010  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3011  * @irq: interrupt number
3012  * @data: pointer to a q_vector
3013  **/
3014 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3015 {
3016         struct i40e_q_vector *q_vector = data;
3017         struct i40e_vsi *vsi;
3018
3019         if (!q_vector->tx.ring)
3020                 return IRQ_HANDLED;
3021
3022         vsi = q_vector->tx.ring->vsi;
3023         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3024
3025         return IRQ_HANDLED;
3026 }
3027
3028 /**
3029  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3030  * @vsi: the VSI being configured
3031  * @v_idx: vector index
3032  * @qp_idx: queue pair index
3033  **/
3034 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3035 {
3036         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3037         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3038         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3039
3040         tx_ring->q_vector = q_vector;
3041         tx_ring->next = q_vector->tx.ring;
3042         q_vector->tx.ring = tx_ring;
3043         q_vector->tx.count++;
3044
3045         rx_ring->q_vector = q_vector;
3046         rx_ring->next = q_vector->rx.ring;
3047         q_vector->rx.ring = rx_ring;
3048         q_vector->rx.count++;
3049 }
3050
3051 /**
3052  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3053  * @vsi: the VSI being configured
3054  *
3055  * This function maps descriptor rings to the queue-specific vectors
3056  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3057  * one vector per queue pair, but on a constrained vector budget, we
3058  * group the queue pairs as "efficiently" as possible.
3059  **/
3060 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3061 {
3062         int qp_remaining = vsi->num_queue_pairs;
3063         int q_vectors = vsi->num_q_vectors;
3064         int num_ringpairs;
3065         int v_start = 0;
3066         int qp_idx = 0;
3067
3068         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3069          * group them so there are multiple queues per vector.
3070          */
3071         for (; v_start < q_vectors && qp_remaining; v_start++) {
3072                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3073
3074                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3075
3076                 q_vector->num_ringpairs = num_ringpairs;
3077
3078                 q_vector->rx.count = 0;
3079                 q_vector->tx.count = 0;
3080                 q_vector->rx.ring = NULL;
3081                 q_vector->tx.ring = NULL;
3082
3083                 while (num_ringpairs--) {
3084                         map_vector_to_qp(vsi, v_start, qp_idx);
3085                         qp_idx++;
3086                         qp_remaining--;
3087                 }
3088         }
3089 }
3090
3091 /**
3092  * i40e_vsi_request_irq - Request IRQ from the OS
3093  * @vsi: the VSI being configured
3094  * @basename: name for the vector
3095  **/
3096 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3097 {
3098         struct i40e_pf *pf = vsi->back;
3099         int err;
3100
3101         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3102                 err = i40e_vsi_request_irq_msix(vsi, basename);
3103         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3104                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3105                                   pf->misc_int_name, pf);
3106         else
3107                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3108                                   pf->misc_int_name, pf);
3109
3110         if (err)
3111                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3112
3113         return err;
3114 }
3115
3116 #ifdef CONFIG_NET_POLL_CONTROLLER
3117 /**
3118  * i40e_netpoll - A Polling 'interrupt'handler
3119  * @netdev: network interface device structure
3120  *
3121  * This is used by netconsole to send skbs without having to re-enable
3122  * interrupts.  It's not called while the normal interrupt routine is executing.
3123  **/
3124 static void i40e_netpoll(struct net_device *netdev)
3125 {
3126         struct i40e_netdev_priv *np = netdev_priv(netdev);
3127         struct i40e_vsi *vsi = np->vsi;
3128         struct i40e_pf *pf = vsi->back;
3129         int i;
3130
3131         /* if interface is down do nothing */
3132         if (test_bit(__I40E_DOWN, &vsi->state))
3133                 return;
3134
3135         pf->flags |= I40E_FLAG_IN_NETPOLL;
3136         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3137                 for (i = 0; i < vsi->num_q_vectors; i++)
3138                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3139         } else {
3140                 i40e_intr(pf->pdev->irq, netdev);
3141         }
3142         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3143 }
3144 #endif
3145
3146 /**
3147  * i40e_vsi_control_tx - Start or stop a VSI's rings
3148  * @vsi: the VSI being configured
3149  * @enable: start or stop the rings
3150  **/
3151 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3152 {
3153         struct i40e_pf *pf = vsi->back;
3154         struct i40e_hw *hw = &pf->hw;
3155         int i, j, pf_q;
3156         u32 tx_reg;
3157
3158         pf_q = vsi->base_queue;
3159         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3160                 for (j = 0; j < 50; j++) {
3161                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3162                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3163                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3164                                 break;
3165                         usleep_range(1000, 2000);
3166                 }
3167                 /* Skip if the queue is already in the requested state */
3168                 if (enable && (tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3169                         continue;
3170                 if (!enable && !(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3171                         continue;
3172
3173                 /* turn on/off the queue */
3174                 if (enable) {
3175                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3176                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3177                 } else {
3178                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3179                 }
3180
3181                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3182
3183                 /* wait for the change to finish */
3184                 for (j = 0; j < 10; j++) {
3185                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3186                         if (enable) {
3187                                 if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3188                                         break;
3189                         } else {
3190                                 if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3191                                         break;
3192                         }
3193
3194                         udelay(10);
3195                 }
3196                 if (j >= 10) {
3197                         dev_info(&pf->pdev->dev, "Tx ring %d %sable timeout\n",
3198                                  pf_q, (enable ? "en" : "dis"));
3199                         return -ETIMEDOUT;
3200                 }
3201         }
3202
3203         if (hw->revision_id == 0)
3204                 mdelay(50);
3205
3206         return 0;
3207 }
3208
3209 /**
3210  * i40e_vsi_control_rx - Start or stop a VSI's rings
3211  * @vsi: the VSI being configured
3212  * @enable: start or stop the rings
3213  **/
3214 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3215 {
3216         struct i40e_pf *pf = vsi->back;
3217         struct i40e_hw *hw = &pf->hw;
3218         int i, j, pf_q;
3219         u32 rx_reg;
3220
3221         pf_q = vsi->base_queue;
3222         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3223                 for (j = 0; j < 50; j++) {
3224                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3225                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3226                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3227                                 break;
3228                         usleep_range(1000, 2000);
3229                 }
3230
3231                 if (enable) {
3232                         /* is STAT set ? */
3233                         if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3234                                 continue;
3235                 } else {
3236                         /* is !STAT set ? */
3237                         if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3238                                 continue;
3239                 }
3240
3241                 /* turn on/off the queue */
3242                 if (enable)
3243                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3244                 else
3245                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3246                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3247
3248                 /* wait for the change to finish */
3249                 for (j = 0; j < 10; j++) {
3250                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3251
3252                         if (enable) {
3253                                 if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3254                                         break;
3255                         } else {
3256                                 if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3257                                         break;
3258                         }
3259
3260                         udelay(10);
3261                 }
3262                 if (j >= 10) {
3263                         dev_info(&pf->pdev->dev, "Rx ring %d %sable timeout\n",
3264                                  pf_q, (enable ? "en" : "dis"));
3265                         return -ETIMEDOUT;
3266                 }
3267         }
3268
3269         return 0;
3270 }
3271
3272 /**
3273  * i40e_vsi_control_rings - Start or stop a VSI's rings
3274  * @vsi: the VSI being configured
3275  * @enable: start or stop the rings
3276  **/
3277 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3278 {
3279         int ret = 0;
3280
3281         /* do rx first for enable and last for disable */
3282         if (request) {
3283                 ret = i40e_vsi_control_rx(vsi, request);
3284                 if (ret)
3285                         return ret;
3286                 ret = i40e_vsi_control_tx(vsi, request);
3287         } else {
3288                 /* Ignore return value, we need to shutdown whatever we can */
3289                 i40e_vsi_control_tx(vsi, request);
3290                 i40e_vsi_control_rx(vsi, request);
3291         }
3292
3293         return ret;
3294 }
3295
3296 /**
3297  * i40e_vsi_free_irq - Free the irq association with the OS
3298  * @vsi: the VSI being configured
3299  **/
3300 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3301 {
3302         struct i40e_pf *pf = vsi->back;
3303         struct i40e_hw *hw = &pf->hw;
3304         int base = vsi->base_vector;
3305         u32 val, qp;
3306         int i;
3307
3308         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3309                 if (!vsi->q_vectors)
3310                         return;
3311
3312                 for (i = 0; i < vsi->num_q_vectors; i++) {
3313                         u16 vector = i + base;
3314
3315                         /* free only the irqs that were actually requested */
3316                         if (!vsi->q_vectors[i] ||
3317                             !vsi->q_vectors[i]->num_ringpairs)
3318                                 continue;
3319
3320                         /* clear the affinity_mask in the IRQ descriptor */
3321                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3322                                               NULL);
3323                         free_irq(pf->msix_entries[vector].vector,
3324                                  vsi->q_vectors[i]);
3325
3326                         /* Tear down the interrupt queue link list
3327                          *
3328                          * We know that they come in pairs and always
3329                          * the Rx first, then the Tx.  To clear the
3330                          * link list, stick the EOL value into the
3331                          * next_q field of the registers.
3332                          */
3333                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3334                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3335                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3336                         val |= I40E_QUEUE_END_OF_LIST
3337                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3338                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3339
3340                         while (qp != I40E_QUEUE_END_OF_LIST) {
3341                                 u32 next;
3342
3343                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3344
3345                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3346                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3347                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3348                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3349
3350                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3351                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3352
3353                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3354
3355                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3356
3357                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3358                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3359
3360                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3361                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3362                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3363                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3364
3365                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3366                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3367
3368                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3369                                 qp = next;
3370                         }
3371                 }
3372         } else {
3373                 free_irq(pf->pdev->irq, pf);
3374
3375                 val = rd32(hw, I40E_PFINT_LNKLST0);
3376                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3377                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3378                 val |= I40E_QUEUE_END_OF_LIST
3379                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3380                 wr32(hw, I40E_PFINT_LNKLST0, val);
3381
3382                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3383                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3384                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3385                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3386                          I40E_QINT_RQCTL_INTEVENT_MASK);
3387
3388                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3389                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3390
3391                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3392
3393                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3394
3395                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3396                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3397                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3398                          I40E_QINT_TQCTL_INTEVENT_MASK);
3399
3400                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3401                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3402
3403                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3404         }
3405 }
3406
3407 /**
3408  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3409  * @vsi: the VSI being configured
3410  * @v_idx: Index of vector to be freed
3411  *
3412  * This function frees the memory allocated to the q_vector.  In addition if
3413  * NAPI is enabled it will delete any references to the NAPI struct prior
3414  * to freeing the q_vector.
3415  **/
3416 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3417 {
3418         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3419         struct i40e_ring *ring;
3420
3421         if (!q_vector)
3422                 return;
3423
3424         /* disassociate q_vector from rings */
3425         i40e_for_each_ring(ring, q_vector->tx)
3426                 ring->q_vector = NULL;
3427
3428         i40e_for_each_ring(ring, q_vector->rx)
3429                 ring->q_vector = NULL;
3430
3431         /* only VSI w/ an associated netdev is set up w/ NAPI */
3432         if (vsi->netdev)
3433                 netif_napi_del(&q_vector->napi);
3434
3435         vsi->q_vectors[v_idx] = NULL;
3436
3437         kfree_rcu(q_vector, rcu);
3438 }
3439
3440 /**
3441  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3442  * @vsi: the VSI being un-configured
3443  *
3444  * This frees the memory allocated to the q_vectors and
3445  * deletes references to the NAPI struct.
3446  **/
3447 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3448 {
3449         int v_idx;
3450
3451         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3452                 i40e_free_q_vector(vsi, v_idx);
3453 }
3454
3455 /**
3456  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3457  * @pf: board private structure
3458  **/
3459 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3460 {
3461         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3462         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3463                 pci_disable_msix(pf->pdev);
3464                 kfree(pf->msix_entries);
3465                 pf->msix_entries = NULL;
3466         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3467                 pci_disable_msi(pf->pdev);
3468         }
3469         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3470 }
3471
3472 /**
3473  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3474  * @pf: board private structure
3475  *
3476  * We go through and clear interrupt specific resources and reset the structure
3477  * to pre-load conditions
3478  **/
3479 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3480 {
3481         int i;
3482
3483         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3484         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
3485                 if (pf->vsi[i])
3486                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3487         i40e_reset_interrupt_capability(pf);
3488 }
3489
3490 /**
3491  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3492  * @vsi: the VSI being configured
3493  **/
3494 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3495 {
3496         int q_idx;
3497
3498         if (!vsi->netdev)
3499                 return;
3500
3501         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3502                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3503 }
3504
3505 /**
3506  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3507  * @vsi: the VSI being configured
3508  **/
3509 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3510 {
3511         int q_idx;
3512
3513         if (!vsi->netdev)
3514                 return;
3515
3516         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3517                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3518 }
3519
3520 /**
3521  * i40e_quiesce_vsi - Pause a given VSI
3522  * @vsi: the VSI being paused
3523  **/
3524 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3525 {
3526         if (test_bit(__I40E_DOWN, &vsi->state))
3527                 return;
3528
3529         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3530         if (vsi->netdev && netif_running(vsi->netdev)) {
3531                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3532         } else {
3533                 set_bit(__I40E_DOWN, &vsi->state);
3534                 i40e_down(vsi);
3535         }
3536 }
3537
3538 /**
3539  * i40e_unquiesce_vsi - Resume a given VSI
3540  * @vsi: the VSI being resumed
3541  **/
3542 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3543 {
3544         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3545                 return;
3546
3547         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3548         if (vsi->netdev && netif_running(vsi->netdev))
3549                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3550         else
3551                 i40e_up(vsi);   /* this clears the DOWN bit */
3552 }
3553
3554 /**
3555  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3556  * @pf: the PF
3557  **/
3558 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3559 {
3560         int v;
3561
3562         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3563                 if (pf->vsi[v])
3564                         i40e_quiesce_vsi(pf->vsi[v]);
3565         }
3566 }
3567
3568 /**
3569  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3570  * @pf: the PF
3571  **/
3572 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3573 {
3574         int v;
3575
3576         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3577                 if (pf->vsi[v])
3578                         i40e_unquiesce_vsi(pf->vsi[v]);
3579         }
3580 }
3581
3582 /**
3583  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3584  * @dcbcfg: the corresponding DCBx configuration structure
3585  *
3586  * Return the number of TCs from given DCBx configuration
3587  **/
3588 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3589 {
3590         u8 num_tc = 0;
3591         int i;
3592
3593         /* Scan the ETS Config Priority Table to find
3594          * traffic class enabled for a given priority
3595          * and use the traffic class index to get the
3596          * number of traffic classes enabled
3597          */
3598         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3599                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3600                         num_tc = dcbcfg->etscfg.prioritytable[i];
3601         }
3602
3603         /* Traffic class index starts from zero so
3604          * increment to return the actual count
3605          */
3606         return num_tc + 1;
3607 }
3608
3609 /**
3610  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3611  * @dcbcfg: the corresponding DCBx configuration structure
3612  *
3613  * Query the current DCB configuration and return the number of
3614  * traffic classes enabled from the given DCBX config
3615  **/
3616 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3617 {
3618         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3619         u8 enabled_tc = 1;
3620         u8 i;
3621
3622         for (i = 0; i < num_tc; i++)
3623                 enabled_tc |= 1 << i;
3624
3625         return enabled_tc;
3626 }
3627
3628 /**
3629  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3630  * @pf: PF being queried
3631  *
3632  * Return number of traffic classes enabled for the given PF
3633  **/
3634 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3635 {
3636         struct i40e_hw *hw = &pf->hw;
3637         u8 i, enabled_tc;
3638         u8 num_tc = 0;
3639         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3640
3641         /* If DCB is not enabled then always in single TC */
3642         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3643                 return 1;
3644
3645         /* MFP mode return count of enabled TCs for this PF */
3646         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3647                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3648                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3649                         if (enabled_tc & (1 << i))
3650                                 num_tc++;
3651                 }
3652                 return num_tc;
3653         }
3654
3655         /* SFP mode will be enabled for all TCs on port */
3656         return i40e_dcb_get_num_tc(dcbcfg);
3657 }
3658
3659 /**
3660  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3661  * @pf: PF being queried
3662  *
3663  * Return a bitmap for first enabled traffic class for this PF.
3664  **/
3665 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3666 {
3667         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3668         u8 i = 0;
3669
3670         if (!enabled_tc)
3671                 return 0x1; /* TC0 */
3672
3673         /* Find the first enabled TC */
3674         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3675                 if (enabled_tc & (1 << i))
3676                         break;
3677         }
3678
3679         return 1 << i;
3680 }
3681
3682 /**
3683  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
3684  * @pf: PF being queried
3685  *
3686  * Return a bitmap for enabled traffic classes for this PF.
3687  **/
3688 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
3689 {
3690         /* If DCB is not enabled for this PF then just return default TC */
3691         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3692                 return i40e_pf_get_default_tc(pf);
3693
3694         /* MFP mode will have enabled TCs set by FW */
3695         if (pf->flags & I40E_FLAG_MFP_ENABLED)
3696                 return pf->hw.func_caps.enabled_tcmap;
3697
3698         /* SFP mode we want PF to be enabled for all TCs */
3699         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
3700 }
3701
3702 /**
3703  * i40e_vsi_get_bw_info - Query VSI BW Information
3704  * @vsi: the VSI being queried
3705  *
3706  * Returns 0 on success, negative value on failure
3707  **/
3708 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
3709 {
3710         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
3711         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
3712         struct i40e_pf *pf = vsi->back;
3713         struct i40e_hw *hw = &pf->hw;
3714         i40e_status aq_ret;
3715         u32 tc_bw_max;
3716         int i;
3717
3718         /* Get the VSI level BW configuration */
3719         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
3720         if (aq_ret) {
3721                 dev_info(&pf->pdev->dev,
3722                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
3723                          aq_ret, pf->hw.aq.asq_last_status);
3724                 return -EINVAL;
3725         }
3726
3727         /* Get the VSI level BW configuration per TC */
3728         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
3729                                                   NULL);
3730         if (aq_ret) {
3731                 dev_info(&pf->pdev->dev,
3732                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
3733                          aq_ret, pf->hw.aq.asq_last_status);
3734                 return -EINVAL;
3735         }
3736
3737         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
3738                 dev_info(&pf->pdev->dev,
3739                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
3740                          bw_config.tc_valid_bits,
3741                          bw_ets_config.tc_valid_bits);
3742                 /* Still continuing */
3743         }
3744
3745         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
3746         vsi->bw_max_quanta = bw_config.max_bw;
3747         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
3748                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
3749         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3750                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
3751                 vsi->bw_ets_limit_credits[i] =
3752                                         le16_to_cpu(bw_ets_config.credits[i]);
3753                 /* 3 bits out of 4 for each TC */
3754                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
3755         }
3756
3757         return 0;
3758 }
3759
3760 /**
3761  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
3762  * @vsi: the VSI being configured
3763  * @enabled_tc: TC bitmap
3764  * @bw_credits: BW shared credits per TC
3765  *
3766  * Returns 0 on success, negative value on failure
3767  **/
3768 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
3769                                        u8 *bw_share)
3770 {
3771         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
3772         i40e_status aq_ret;
3773         int i;
3774
3775         bw_data.tc_valid_bits = enabled_tc;
3776         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3777                 bw_data.tc_bw_credits[i] = bw_share[i];
3778
3779         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
3780                                           NULL);
3781         if (aq_ret) {
3782                 dev_info(&vsi->back->pdev->dev,
3783                          "AQ command Config VSI BW allocation per TC failed = %d\n",
3784                          vsi->back->hw.aq.asq_last_status);
3785                 return -EINVAL;
3786         }
3787
3788         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3789                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
3790
3791         return 0;
3792 }
3793
3794 /**
3795  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
3796  * @vsi: the VSI being configured
3797  * @enabled_tc: TC map to be enabled
3798  *
3799  **/
3800 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3801 {
3802         struct net_device *netdev = vsi->netdev;
3803         struct i40e_pf *pf = vsi->back;
3804         struct i40e_hw *hw = &pf->hw;
3805         u8 netdev_tc = 0;
3806         int i;
3807         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3808
3809         if (!netdev)
3810                 return;
3811
3812         if (!enabled_tc) {
3813                 netdev_reset_tc(netdev);
3814                 return;
3815         }
3816
3817         /* Set up actual enabled TCs on the VSI */
3818         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
3819                 return;
3820
3821         /* set per TC queues for the VSI */
3822         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3823                 /* Only set TC queues for enabled tcs
3824                  *
3825                  * e.g. For a VSI that has TC0 and TC3 enabled the
3826                  * enabled_tc bitmap would be 0x00001001; the driver
3827                  * will set the numtc for netdev as 2 that will be
3828                  * referenced by the netdev layer as TC 0 and 1.
3829                  */
3830                 if (vsi->tc_config.enabled_tc & (1 << i))
3831                         netdev_set_tc_queue(netdev,
3832                                         vsi->tc_config.tc_info[i].netdev_tc,
3833                                         vsi->tc_config.tc_info[i].qcount,
3834                                         vsi->tc_config.tc_info[i].qoffset);
3835         }
3836
3837         /* Assign UP2TC map for the VSI */
3838         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3839                 /* Get the actual TC# for the UP */
3840                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
3841                 /* Get the mapped netdev TC# for the UP */
3842                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
3843                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
3844         }
3845 }
3846
3847 /**
3848  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
3849  * @vsi: the VSI being configured
3850  * @ctxt: the ctxt buffer returned from AQ VSI update param command
3851  **/
3852 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
3853                                       struct i40e_vsi_context *ctxt)
3854 {
3855         /* copy just the sections touched not the entire info
3856          * since not all sections are valid as returned by
3857          * update vsi params
3858          */
3859         vsi->info.mapping_flags = ctxt->info.mapping_flags;
3860         memcpy(&vsi->info.queue_mapping,
3861                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
3862         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
3863                sizeof(vsi->info.tc_mapping));
3864 }
3865
3866 /**
3867  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
3868  * @vsi: VSI to be configured
3869  * @enabled_tc: TC bitmap
3870  *
3871  * This configures a particular VSI for TCs that are mapped to the
3872  * given TC bitmap. It uses default bandwidth share for TCs across
3873  * VSIs to configure TC for a particular VSI.
3874  *
3875  * NOTE:
3876  * It is expected that the VSI queues have been quisced before calling
3877  * this function.
3878  **/
3879 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3880 {
3881         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
3882         struct i40e_vsi_context ctxt;
3883         int ret = 0;
3884         int i;
3885
3886         /* Check if enabled_tc is same as existing or new TCs */
3887         if (vsi->tc_config.enabled_tc == enabled_tc)
3888                 return ret;
3889
3890         /* Enable ETS TCs with equal BW Share for now across all VSIs */
3891         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3892                 if (enabled_tc & (1 << i))
3893                         bw_share[i] = 1;
3894         }
3895
3896         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
3897         if (ret) {
3898                 dev_info(&vsi->back->pdev->dev,
3899                          "Failed configuring TC map %d for VSI %d\n",
3900                          enabled_tc, vsi->seid);
3901                 goto out;
3902         }
3903
3904         /* Update Queue Pairs Mapping for currently enabled UPs */
3905         ctxt.seid = vsi->seid;
3906         ctxt.pf_num = vsi->back->hw.pf_id;
3907         ctxt.vf_num = 0;
3908         ctxt.uplink_seid = vsi->uplink_seid;
3909         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
3910         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
3911
3912         /* Update the VSI after updating the VSI queue-mapping information */
3913         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
3914         if (ret) {
3915                 dev_info(&vsi->back->pdev->dev,
3916                          "update vsi failed, aq_err=%d\n",
3917                          vsi->back->hw.aq.asq_last_status);
3918                 goto out;
3919         }
3920         /* update the local VSI info with updated queue map */
3921         i40e_vsi_update_queue_map(vsi, &ctxt);
3922         vsi->info.valid_sections = 0;
3923
3924         /* Update current VSI BW information */
3925         ret = i40e_vsi_get_bw_info(vsi);
3926         if (ret) {
3927                 dev_info(&vsi->back->pdev->dev,
3928                          "Failed updating vsi bw info, aq_err=%d\n",
3929                          vsi->back->hw.aq.asq_last_status);
3930                 goto out;
3931         }
3932
3933         /* Update the netdev TC setup */
3934         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
3935 out:
3936         return ret;
3937 }
3938
3939 /**
3940  * i40e_veb_config_tc - Configure TCs for given VEB
3941  * @veb: given VEB
3942  * @enabled_tc: TC bitmap
3943  *
3944  * Configures given TC bitmap for VEB (switching) element
3945  **/
3946 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
3947 {
3948         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
3949         struct i40e_pf *pf = veb->pf;
3950         int ret = 0;
3951         int i;
3952
3953         /* No TCs or already enabled TCs just return */
3954         if (!enabled_tc || veb->enabled_tc == enabled_tc)
3955                 return ret;
3956
3957         bw_data.tc_valid_bits = enabled_tc;
3958         /* bw_data.absolute_credits is not set (relative) */
3959
3960         /* Enable ETS TCs with equal BW Share for now */
3961         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3962                 if (enabled_tc & (1 << i))
3963                         bw_data.tc_bw_share_credits[i] = 1;
3964         }
3965
3966         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
3967                                                    &bw_data, NULL);
3968         if (ret) {
3969                 dev_info(&pf->pdev->dev,
3970                          "veb bw config failed, aq_err=%d\n",
3971                          pf->hw.aq.asq_last_status);
3972                 goto out;
3973         }
3974
3975         /* Update the BW information */
3976         ret = i40e_veb_get_bw_info(veb);
3977         if (ret) {
3978                 dev_info(&pf->pdev->dev,
3979                          "Failed getting veb bw config, aq_err=%d\n",
3980                          pf->hw.aq.asq_last_status);
3981         }
3982
3983 out:
3984         return ret;
3985 }
3986
3987 #ifdef CONFIG_I40E_DCB
3988 /**
3989  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
3990  * @pf: PF struct
3991  *
3992  * Reconfigure VEB/VSIs on a given PF; it is assumed that
3993  * the caller would've quiesce all the VSIs before calling
3994  * this function
3995  **/
3996 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
3997 {
3998         u8 tc_map = 0;
3999         int ret;
4000         u8 v;
4001
4002         /* Enable the TCs available on PF to all VEBs */
4003         tc_map = i40e_pf_get_tc_map(pf);
4004         for (v = 0; v < I40E_MAX_VEB; v++) {
4005                 if (!pf->veb[v])
4006                         continue;
4007                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4008                 if (ret) {
4009                         dev_info(&pf->pdev->dev,
4010                                  "Failed configuring TC for VEB seid=%d\n",
4011                                  pf->veb[v]->seid);
4012                         /* Will try to configure as many components */
4013                 }
4014         }
4015
4016         /* Update each VSI */
4017         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4018                 if (!pf->vsi[v])
4019                         continue;
4020
4021                 /* - Enable all TCs for the LAN VSI
4022                  * - For all others keep them at TC0 for now
4023                  */
4024                 if (v == pf->lan_vsi)
4025                         tc_map = i40e_pf_get_tc_map(pf);
4026                 else
4027                         tc_map = i40e_pf_get_default_tc(pf);
4028
4029                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4030                 if (ret) {
4031                         dev_info(&pf->pdev->dev,
4032                                  "Failed configuring TC for VSI seid=%d\n",
4033                                  pf->vsi[v]->seid);
4034                         /* Will try to configure as many components */
4035                 } else {
4036                         if (pf->vsi[v]->netdev)
4037                                 i40e_dcbnl_set_all(pf->vsi[v]);
4038                 }
4039         }
4040 }
4041
4042 /**
4043  * i40e_init_pf_dcb - Initialize DCB configuration
4044  * @pf: PF being configured
4045  *
4046  * Query the current DCB configuration and cache it
4047  * in the hardware structure
4048  **/
4049 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4050 {
4051         struct i40e_hw *hw = &pf->hw;
4052         int err = 0;
4053
4054         if (pf->hw.func_caps.npar_enable)
4055                 goto out;
4056
4057         /* Get the initial DCB configuration */
4058         err = i40e_init_dcb(hw);
4059         if (!err) {
4060                 /* Device/Function is not DCBX capable */
4061                 if ((!hw->func_caps.dcb) ||
4062                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4063                         dev_info(&pf->pdev->dev,
4064                                  "DCBX offload is not supported or is disabled for this PF.\n");
4065
4066                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4067                                 goto out;
4068
4069                 } else {
4070                         /* When status is not DISABLED then DCBX in FW */
4071                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4072                                        DCB_CAP_DCBX_VER_IEEE;
4073                         pf->flags |= I40E_FLAG_DCB_ENABLED;
4074                 }
4075         }
4076
4077 out:
4078         return err;
4079 }
4080 #endif /* CONFIG_I40E_DCB */
4081
4082 /**
4083  * i40e_up_complete - Finish the last steps of bringing up a connection
4084  * @vsi: the VSI being configured
4085  **/
4086 static int i40e_up_complete(struct i40e_vsi *vsi)
4087 {
4088         struct i40e_pf *pf = vsi->back;
4089         int err;
4090
4091         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4092                 i40e_vsi_configure_msix(vsi);
4093         else
4094                 i40e_configure_msi_and_legacy(vsi);
4095
4096         /* start rings */
4097         err = i40e_vsi_control_rings(vsi, true);
4098         if (err)
4099                 return err;
4100
4101         clear_bit(__I40E_DOWN, &vsi->state);
4102         i40e_napi_enable_all(vsi);
4103         i40e_vsi_enable_irq(vsi);
4104
4105         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4106             (vsi->netdev)) {
4107                 netdev_info(vsi->netdev, "NIC Link is Up\n");
4108                 netif_tx_start_all_queues(vsi->netdev);
4109                 netif_carrier_on(vsi->netdev);
4110         } else if (vsi->netdev) {
4111                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4112         }
4113
4114         /* replay FDIR SB filters */
4115         if (vsi->type == I40E_VSI_FDIR)
4116                 i40e_fdir_filter_restore(vsi);
4117         i40e_service_event_schedule(pf);
4118
4119         return 0;
4120 }
4121
4122 /**
4123  * i40e_vsi_reinit_locked - Reset the VSI
4124  * @vsi: the VSI being configured
4125  *
4126  * Rebuild the ring structs after some configuration
4127  * has changed, e.g. MTU size.
4128  **/
4129 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4130 {
4131         struct i40e_pf *pf = vsi->back;
4132
4133         WARN_ON(in_interrupt());
4134         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4135                 usleep_range(1000, 2000);
4136         i40e_down(vsi);
4137
4138         /* Give a VF some time to respond to the reset.  The
4139          * two second wait is based upon the watchdog cycle in
4140          * the VF driver.
4141          */
4142         if (vsi->type == I40E_VSI_SRIOV)
4143                 msleep(2000);
4144         i40e_up(vsi);
4145         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4146 }
4147
4148 /**
4149  * i40e_up - Bring the connection back up after being down
4150  * @vsi: the VSI being configured
4151  **/
4152 int i40e_up(struct i40e_vsi *vsi)
4153 {
4154         int err;
4155
4156         err = i40e_vsi_configure(vsi);
4157         if (!err)
4158                 err = i40e_up_complete(vsi);
4159
4160         return err;
4161 }
4162
4163 /**
4164  * i40e_down - Shutdown the connection processing
4165  * @vsi: the VSI being stopped
4166  **/
4167 void i40e_down(struct i40e_vsi *vsi)
4168 {
4169         int i;
4170
4171         /* It is assumed that the caller of this function
4172          * sets the vsi->state __I40E_DOWN bit.
4173          */
4174         if (vsi->netdev) {
4175                 netif_carrier_off(vsi->netdev);
4176                 netif_tx_disable(vsi->netdev);
4177         }
4178         i40e_vsi_disable_irq(vsi);
4179         i40e_vsi_control_rings(vsi, false);
4180         i40e_napi_disable_all(vsi);
4181
4182         for (i = 0; i < vsi->num_queue_pairs; i++) {
4183                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4184                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4185         }
4186 }
4187
4188 /**
4189  * i40e_setup_tc - configure multiple traffic classes
4190  * @netdev: net device to configure
4191  * @tc: number of traffic classes to enable
4192  **/
4193 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4194 {
4195         struct i40e_netdev_priv *np = netdev_priv(netdev);
4196         struct i40e_vsi *vsi = np->vsi;
4197         struct i40e_pf *pf = vsi->back;
4198         u8 enabled_tc = 0;
4199         int ret = -EINVAL;
4200         int i;
4201
4202         /* Check if DCB enabled to continue */
4203         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4204                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4205                 goto exit;
4206         }
4207
4208         /* Check if MFP enabled */
4209         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4210                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4211                 goto exit;
4212         }
4213
4214         /* Check whether tc count is within enabled limit */
4215         if (tc > i40e_pf_get_num_tc(pf)) {
4216                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4217                 goto exit;
4218         }
4219
4220         /* Generate TC map for number of tc requested */
4221         for (i = 0; i < tc; i++)
4222                 enabled_tc |= (1 << i);
4223
4224         /* Requesting same TC configuration as already enabled */
4225         if (enabled_tc == vsi->tc_config.enabled_tc)
4226                 return 0;
4227
4228         /* Quiesce VSI queues */
4229         i40e_quiesce_vsi(vsi);
4230
4231         /* Configure VSI for enabled TCs */
4232         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4233         if (ret) {
4234                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4235                             vsi->seid);
4236                 goto exit;
4237         }
4238
4239         /* Unquiesce VSI */
4240         i40e_unquiesce_vsi(vsi);
4241
4242 exit:
4243         return ret;
4244 }
4245
4246 /**
4247  * i40e_open - Called when a network interface is made active
4248  * @netdev: network interface device structure
4249  *
4250  * The open entry point is called when a network interface is made
4251  * active by the system (IFF_UP).  At this point all resources needed
4252  * for transmit and receive operations are allocated, the interrupt
4253  * handler is registered with the OS, the netdev watchdog subtask is
4254  * enabled, and the stack is notified that the interface is ready.
4255  *
4256  * Returns 0 on success, negative value on failure
4257  **/
4258 static int i40e_open(struct net_device *netdev)
4259 {
4260         struct i40e_netdev_priv *np = netdev_priv(netdev);
4261         struct i40e_vsi *vsi = np->vsi;
4262         struct i40e_pf *pf = vsi->back;
4263         int err;
4264
4265         /* disallow open during test or if eeprom is broken */
4266         if (test_bit(__I40E_TESTING, &pf->state) ||
4267             test_bit(__I40E_BAD_EEPROM, &pf->state))
4268                 return -EBUSY;
4269
4270         netif_carrier_off(netdev);
4271
4272         err = i40e_vsi_open(vsi);
4273         if (err)
4274                 return err;
4275
4276 #ifdef CONFIG_I40E_VXLAN
4277         vxlan_get_rx_port(netdev);
4278 #endif
4279
4280         return 0;
4281 }
4282
4283 /**
4284  * i40e_vsi_open -
4285  * @vsi: the VSI to open
4286  *
4287  * Finish initialization of the VSI.
4288  *
4289  * Returns 0 on success, negative value on failure
4290  **/
4291 int i40e_vsi_open(struct i40e_vsi *vsi)
4292 {
4293         struct i40e_pf *pf = vsi->back;
4294         char int_name[IFNAMSIZ];
4295         int err;
4296
4297         /* allocate descriptors */
4298         err = i40e_vsi_setup_tx_resources(vsi);
4299         if (err)
4300                 goto err_setup_tx;
4301         err = i40e_vsi_setup_rx_resources(vsi);
4302         if (err)
4303                 goto err_setup_rx;
4304
4305         err = i40e_vsi_configure(vsi);
4306         if (err)
4307                 goto err_setup_rx;
4308
4309         if (!vsi->netdev) {
4310                 err = EINVAL;
4311                 goto err_setup_rx;
4312         }
4313         snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4314                  dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4315         err = i40e_vsi_request_irq(vsi, int_name);
4316         if (err)
4317                 goto err_setup_rx;
4318
4319         /* Notify the stack of the actual queue counts. */
4320         err = netif_set_real_num_tx_queues(vsi->netdev, vsi->num_queue_pairs);
4321         if (err)
4322                 goto err_set_queues;
4323
4324         err = netif_set_real_num_rx_queues(vsi->netdev, vsi->num_queue_pairs);
4325         if (err)
4326                 goto err_set_queues;
4327
4328         err = i40e_up_complete(vsi);
4329         if (err)
4330                 goto err_up_complete;
4331
4332         return 0;
4333
4334 err_up_complete:
4335         i40e_down(vsi);
4336 err_set_queues:
4337         i40e_vsi_free_irq(vsi);
4338 err_setup_rx:
4339         i40e_vsi_free_rx_resources(vsi);
4340 err_setup_tx:
4341         i40e_vsi_free_tx_resources(vsi);
4342         if (vsi == pf->vsi[pf->lan_vsi])
4343                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4344
4345         return err;
4346 }
4347
4348 /**
4349  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4350  * @pf: Pointer to pf
4351  *
4352  * This function destroys the hlist where all the Flow Director
4353  * filters were saved.
4354  **/
4355 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4356 {
4357         struct i40e_fdir_filter *filter;
4358         struct hlist_node *node2;
4359
4360         hlist_for_each_entry_safe(filter, node2,
4361                                   &pf->fdir_filter_list, fdir_node) {
4362                 hlist_del(&filter->fdir_node);
4363                 kfree(filter);
4364         }
4365         pf->fdir_pf_active_filters = 0;
4366 }
4367
4368 /**
4369  * i40e_close - Disables a network interface
4370  * @netdev: network interface device structure
4371  *
4372  * The close entry point is called when an interface is de-activated
4373  * by the OS.  The hardware is still under the driver's control, but
4374  * this netdev interface is disabled.
4375  *
4376  * Returns 0, this is not allowed to fail
4377  **/
4378 static int i40e_close(struct net_device *netdev)
4379 {
4380         struct i40e_netdev_priv *np = netdev_priv(netdev);
4381         struct i40e_vsi *vsi = np->vsi;
4382
4383         if (test_and_set_bit(__I40E_DOWN, &vsi->state))
4384                 return 0;
4385
4386         i40e_down(vsi);
4387         i40e_vsi_free_irq(vsi);
4388
4389         i40e_vsi_free_tx_resources(vsi);
4390         i40e_vsi_free_rx_resources(vsi);
4391
4392         return 0;
4393 }
4394
4395 /**
4396  * i40e_do_reset - Start a PF or Core Reset sequence
4397  * @pf: board private structure
4398  * @reset_flags: which reset is requested
4399  *
4400  * The essential difference in resets is that the PF Reset
4401  * doesn't clear the packet buffers, doesn't reset the PE
4402  * firmware, and doesn't bother the other PFs on the chip.
4403  **/
4404 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4405 {
4406         u32 val;
4407
4408         WARN_ON(in_interrupt());
4409
4410         /* do the biggest reset indicated */
4411         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4412
4413                 /* Request a Global Reset
4414                  *
4415                  * This will start the chip's countdown to the actual full
4416                  * chip reset event, and a warning interrupt to be sent
4417                  * to all PFs, including the requestor.  Our handler
4418                  * for the warning interrupt will deal with the shutdown
4419                  * and recovery of the switch setup.
4420                  */
4421                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
4422                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4423                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4424                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4425
4426         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4427
4428                 /* Request a Core Reset
4429                  *
4430                  * Same as Global Reset, except does *not* include the MAC/PHY
4431                  */
4432                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
4433                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4434                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4435                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4436                 i40e_flush(&pf->hw);
4437
4438         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4439
4440                 /* Request a Firmware Reset
4441                  *
4442                  * Same as Global reset, plus restarting the
4443                  * embedded firmware engine.
4444                  */
4445                 /* enable EMP Reset */
4446                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4447                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4448                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4449
4450                 /* force the reset */
4451                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4452                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4453                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4454                 i40e_flush(&pf->hw);
4455
4456         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4457
4458                 /* Request a PF Reset
4459                  *
4460                  * Resets only the PF-specific registers
4461                  *
4462                  * This goes directly to the tear-down and rebuild of
4463                  * the switch, since we need to do all the recovery as
4464                  * for the Core Reset.
4465                  */
4466                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
4467                 i40e_handle_reset_warning(pf);
4468
4469         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4470                 int v;
4471
4472                 /* Find the VSI(s) that requested a re-init */
4473                 dev_info(&pf->pdev->dev,
4474                          "VSI reinit requested\n");
4475                 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4476                         struct i40e_vsi *vsi = pf->vsi[v];
4477                         if (vsi != NULL &&
4478                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4479                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4480                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4481                         }
4482                 }
4483
4484                 /* no further action needed, so return now */
4485                 return;
4486         } else {
4487                 dev_info(&pf->pdev->dev,
4488                          "bad reset request 0x%08x\n", reset_flags);
4489                 return;
4490         }
4491 }
4492
4493 #ifdef CONFIG_I40E_DCB
4494 /**
4495  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
4496  * @pf: board private structure
4497  * @old_cfg: current DCB config
4498  * @new_cfg: new DCB config
4499  **/
4500 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
4501                             struct i40e_dcbx_config *old_cfg,
4502                             struct i40e_dcbx_config *new_cfg)
4503 {
4504         bool need_reconfig = false;
4505
4506         /* Check if ETS configuration has changed */
4507         if (memcmp(&new_cfg->etscfg,
4508                    &old_cfg->etscfg,
4509                    sizeof(new_cfg->etscfg))) {
4510                 /* If Priority Table has changed reconfig is needed */
4511                 if (memcmp(&new_cfg->etscfg.prioritytable,
4512                            &old_cfg->etscfg.prioritytable,
4513                            sizeof(new_cfg->etscfg.prioritytable))) {
4514                         need_reconfig = true;
4515                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
4516                 }
4517
4518                 if (memcmp(&new_cfg->etscfg.tcbwtable,
4519                            &old_cfg->etscfg.tcbwtable,
4520                            sizeof(new_cfg->etscfg.tcbwtable)))
4521                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
4522
4523                 if (memcmp(&new_cfg->etscfg.tsatable,
4524                            &old_cfg->etscfg.tsatable,
4525                            sizeof(new_cfg->etscfg.tsatable)))
4526                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
4527         }
4528
4529         /* Check if PFC configuration has changed */
4530         if (memcmp(&new_cfg->pfc,
4531                    &old_cfg->pfc,
4532                    sizeof(new_cfg->pfc))) {
4533                 need_reconfig = true;
4534                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
4535         }
4536
4537         /* Check if APP Table has changed */
4538         if (memcmp(&new_cfg->app,
4539                    &old_cfg->app,
4540                    sizeof(new_cfg->app))) {
4541                 need_reconfig = true;
4542                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
4543         }
4544
4545         return need_reconfig;
4546 }
4547
4548 /**
4549  * i40e_handle_lldp_event - Handle LLDP Change MIB event
4550  * @pf: board private structure
4551  * @e: event info posted on ARQ
4552  **/
4553 static int i40e_handle_lldp_event(struct i40e_pf *pf,
4554                                   struct i40e_arq_event_info *e)
4555 {
4556         struct i40e_aqc_lldp_get_mib *mib =
4557                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
4558         struct i40e_hw *hw = &pf->hw;
4559         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
4560         struct i40e_dcbx_config tmp_dcbx_cfg;
4561         bool need_reconfig = false;
4562         int ret = 0;
4563         u8 type;
4564
4565         /* Ignore if event is not for Nearest Bridge */
4566         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
4567                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
4568         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
4569                 return ret;
4570
4571         /* Check MIB Type and return if event for Remote MIB update */
4572         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
4573         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
4574                 /* Update the remote cached instance and return */
4575                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
4576                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
4577                                 &hw->remote_dcbx_config);
4578                 goto exit;
4579         }
4580
4581         /* Convert/store the DCBX data from LLDPDU temporarily */
4582         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
4583         ret = i40e_lldp_to_dcb_config(e->msg_buf, &tmp_dcbx_cfg);
4584         if (ret) {
4585                 /* Error in LLDPDU parsing return */
4586                 dev_info(&pf->pdev->dev, "Failed parsing LLDPDU from event buffer\n");
4587                 goto exit;
4588         }
4589
4590         /* No change detected in DCBX configs */
4591         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
4592                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
4593                 goto exit;
4594         }
4595
4596         need_reconfig = i40e_dcb_need_reconfig(pf, dcbx_cfg, &tmp_dcbx_cfg);
4597
4598         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg);
4599
4600         /* Overwrite the new configuration */
4601         *dcbx_cfg = tmp_dcbx_cfg;
4602
4603         if (!need_reconfig)
4604                 goto exit;
4605
4606         /* Reconfiguration needed quiesce all VSIs */
4607         i40e_pf_quiesce_all_vsi(pf);
4608
4609         /* Changes in configuration update VEB/VSI */
4610         i40e_dcb_reconfigure(pf);
4611
4612         i40e_pf_unquiesce_all_vsi(pf);
4613 exit:
4614         return ret;
4615 }
4616 #endif /* CONFIG_I40E_DCB */
4617
4618 /**
4619  * i40e_do_reset_safe - Protected reset path for userland calls.
4620  * @pf: board private structure
4621  * @reset_flags: which reset is requested
4622  *
4623  **/
4624 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
4625 {
4626         rtnl_lock();
4627         i40e_do_reset(pf, reset_flags);
4628         rtnl_unlock();
4629 }
4630
4631 /**
4632  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
4633  * @pf: board private structure
4634  * @e: event info posted on ARQ
4635  *
4636  * Handler for LAN Queue Overflow Event generated by the firmware for PF
4637  * and VF queues
4638  **/
4639 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
4640                                            struct i40e_arq_event_info *e)
4641 {
4642         struct i40e_aqc_lan_overflow *data =
4643                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
4644         u32 queue = le32_to_cpu(data->prtdcb_rupto);
4645         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
4646         struct i40e_hw *hw = &pf->hw;
4647         struct i40e_vf *vf;
4648         u16 vf_id;
4649
4650         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
4651                 queue, qtx_ctl);
4652
4653         /* Queue belongs to VF, find the VF and issue VF reset */
4654         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
4655             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
4656                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
4657                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
4658                 vf_id -= hw->func_caps.vf_base_id;
4659                 vf = &pf->vf[vf_id];
4660                 i40e_vc_notify_vf_reset(vf);
4661                 /* Allow VF to process pending reset notification */
4662                 msleep(20);
4663                 i40e_reset_vf(vf, false);
4664         }
4665 }
4666
4667 /**
4668  * i40e_service_event_complete - Finish up the service event
4669  * @pf: board private structure
4670  **/
4671 static void i40e_service_event_complete(struct i40e_pf *pf)
4672 {
4673         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
4674
4675         /* flush memory to make sure state is correct before next watchog */
4676         smp_mb__before_clear_bit();
4677         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
4678 }
4679
4680 /**
4681  * i40e_get_current_fd_count - Get the count of FD filters programmed in the HW
4682  * @pf: board private structure
4683  **/
4684 int i40e_get_current_fd_count(struct i40e_pf *pf)
4685 {
4686         int val, fcnt_prog;
4687         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
4688         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
4689                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
4690                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
4691         return fcnt_prog;
4692 }
4693
4694 /**
4695  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
4696  * @pf: board private structure
4697  **/
4698 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
4699 {
4700         u32 fcnt_prog, fcnt_avail;
4701
4702         /* Check if, FD SB or ATR was auto disabled and if there is enough room
4703          * to re-enable
4704          */
4705         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4706             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4707                 return;
4708         fcnt_prog = i40e_get_current_fd_count(pf);
4709         fcnt_avail = pf->hw.fdir_shared_filter_count +
4710                                                pf->fdir_pf_filter_count;
4711         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) {
4712                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
4713                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
4714                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
4715                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
4716                 }
4717         }
4718         /* Wait for some more space to be available to turn on ATR */
4719         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
4720                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4721                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
4722                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4723                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
4724                 }
4725         }
4726 }
4727
4728 /**
4729  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
4730  * @pf: board private structure
4731  **/
4732 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
4733 {
4734         if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
4735                 return;
4736
4737         /* if interface is down do nothing */
4738         if (test_bit(__I40E_DOWN, &pf->state))
4739                 return;
4740         i40e_fdir_check_and_reenable(pf);
4741
4742         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4743             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4744                 pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
4745 }
4746
4747 /**
4748  * i40e_vsi_link_event - notify VSI of a link event
4749  * @vsi: vsi to be notified
4750  * @link_up: link up or down
4751  **/
4752 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
4753 {
4754         if (!vsi)
4755                 return;
4756
4757         switch (vsi->type) {
4758         case I40E_VSI_MAIN:
4759                 if (!vsi->netdev || !vsi->netdev_registered)
4760                         break;
4761
4762                 if (link_up) {
4763                         netif_carrier_on(vsi->netdev);
4764                         netif_tx_wake_all_queues(vsi->netdev);
4765                 } else {
4766                         netif_carrier_off(vsi->netdev);
4767                         netif_tx_stop_all_queues(vsi->netdev);
4768                 }
4769                 break;
4770
4771         case I40E_VSI_SRIOV:
4772                 break;
4773
4774         case I40E_VSI_VMDQ2:
4775         case I40E_VSI_CTRL:
4776         case I40E_VSI_MIRROR:
4777         default:
4778                 /* there is no notification for other VSIs */
4779                 break;
4780         }
4781 }
4782
4783 /**
4784  * i40e_veb_link_event - notify elements on the veb of a link event
4785  * @veb: veb to be notified
4786  * @link_up: link up or down
4787  **/
4788 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
4789 {
4790         struct i40e_pf *pf;
4791         int i;
4792
4793         if (!veb || !veb->pf)
4794                 return;
4795         pf = veb->pf;
4796
4797         /* depth first... */
4798         for (i = 0; i < I40E_MAX_VEB; i++)
4799                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
4800                         i40e_veb_link_event(pf->veb[i], link_up);
4801
4802         /* ... now the local VSIs */
4803         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4804                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
4805                         i40e_vsi_link_event(pf->vsi[i], link_up);
4806 }
4807
4808 /**
4809  * i40e_link_event - Update netif_carrier status
4810  * @pf: board private structure
4811  **/
4812 static void i40e_link_event(struct i40e_pf *pf)
4813 {
4814         bool new_link, old_link;
4815
4816         new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
4817         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
4818
4819         if (new_link == old_link)
4820                 return;
4821
4822         if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
4823                 netdev_info(pf->vsi[pf->lan_vsi]->netdev,
4824                             "NIC Link is %s\n", (new_link ? "Up" : "Down"));
4825
4826         /* Notify the base of the switch tree connected to
4827          * the link.  Floating VEBs are not notified.
4828          */
4829         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
4830                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
4831         else
4832                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
4833
4834         if (pf->vf)
4835                 i40e_vc_notify_link_state(pf);
4836
4837         if (pf->flags & I40E_FLAG_PTP)
4838                 i40e_ptp_set_increment(pf);
4839 }
4840
4841 /**
4842  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
4843  * @pf: board private structure
4844  *
4845  * Set the per-queue flags to request a check for stuck queues in the irq
4846  * clean functions, then force interrupts to be sure the irq clean is called.
4847  **/
4848 static void i40e_check_hang_subtask(struct i40e_pf *pf)
4849 {
4850         int i, v;
4851
4852         /* If we're down or resetting, just bail */
4853         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
4854                 return;
4855
4856         /* for each VSI/netdev
4857          *     for each Tx queue
4858          *         set the check flag
4859          *     for each q_vector
4860          *         force an interrupt
4861          */
4862         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4863                 struct i40e_vsi *vsi = pf->vsi[v];
4864                 int armed = 0;
4865
4866                 if (!pf->vsi[v] ||
4867                     test_bit(__I40E_DOWN, &vsi->state) ||
4868                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
4869                         continue;
4870
4871                 for (i = 0; i < vsi->num_queue_pairs; i++) {
4872                         set_check_for_tx_hang(vsi->tx_rings[i]);
4873                         if (test_bit(__I40E_HANG_CHECK_ARMED,
4874                                      &vsi->tx_rings[i]->state))
4875                                 armed++;
4876                 }
4877
4878                 if (armed) {
4879                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
4880                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
4881                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
4882                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
4883                         } else {
4884                                 u16 vec = vsi->base_vector - 1;
4885                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
4886                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
4887                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
4888                                         wr32(&vsi->back->hw,
4889                                              I40E_PFINT_DYN_CTLN(vec), val);
4890                         }
4891                         i40e_flush(&vsi->back->hw);
4892                 }
4893         }
4894 }
4895
4896 /**
4897  * i40e_watchdog_subtask - Check and bring link up
4898  * @pf: board private structure
4899  **/
4900 static void i40e_watchdog_subtask(struct i40e_pf *pf)
4901 {
4902         int i;
4903
4904         /* if interface is down do nothing */
4905         if (test_bit(__I40E_DOWN, &pf->state) ||
4906             test_bit(__I40E_CONFIG_BUSY, &pf->state))
4907                 return;
4908
4909         /* Update the stats for active netdevs so the network stack
4910          * can look at updated numbers whenever it cares to
4911          */
4912         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4913                 if (pf->vsi[i] && pf->vsi[i]->netdev)
4914                         i40e_update_stats(pf->vsi[i]);
4915
4916         /* Update the stats for the active switching components */
4917         for (i = 0; i < I40E_MAX_VEB; i++)
4918                 if (pf->veb[i])
4919                         i40e_update_veb_stats(pf->veb[i]);
4920
4921         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
4922 }
4923
4924 /**
4925  * i40e_reset_subtask - Set up for resetting the device and driver
4926  * @pf: board private structure
4927  **/
4928 static void i40e_reset_subtask(struct i40e_pf *pf)
4929 {
4930         u32 reset_flags = 0;
4931
4932         rtnl_lock();
4933         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
4934                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
4935                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
4936         }
4937         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
4938                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
4939                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4940         }
4941         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
4942                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
4943                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
4944         }
4945         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
4946                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
4947                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
4948         }
4949
4950         /* If there's a recovery already waiting, it takes
4951          * precedence before starting a new reset sequence.
4952          */
4953         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
4954                 i40e_handle_reset_warning(pf);
4955                 goto unlock;
4956         }
4957
4958         /* If we're already down or resetting, just bail */
4959         if (reset_flags &&
4960             !test_bit(__I40E_DOWN, &pf->state) &&
4961             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
4962                 i40e_do_reset(pf, reset_flags);
4963
4964 unlock:
4965         rtnl_unlock();
4966 }
4967
4968 /**
4969  * i40e_handle_link_event - Handle link event
4970  * @pf: board private structure
4971  * @e: event info posted on ARQ
4972  **/
4973 static void i40e_handle_link_event(struct i40e_pf *pf,
4974                                    struct i40e_arq_event_info *e)
4975 {
4976         struct i40e_hw *hw = &pf->hw;
4977         struct i40e_aqc_get_link_status *status =
4978                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
4979         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
4980
4981         /* save off old link status information */
4982         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
4983                sizeof(pf->hw.phy.link_info_old));
4984
4985         /* update link status */
4986         hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
4987         hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
4988         hw_link_info->link_info = status->link_info;
4989         hw_link_info->an_info = status->an_info;
4990         hw_link_info->ext_info = status->ext_info;
4991         hw_link_info->lse_enable =
4992                 le16_to_cpu(status->command_flags) &
4993                             I40E_AQ_LSE_ENABLE;
4994
4995         /* process the event */
4996         i40e_link_event(pf);
4997
4998         /* Do a new status request to re-enable LSE reporting
4999          * and load new status information into the hw struct,
5000          * then see if the status changed while processing the
5001          * initial event.
5002          */
5003         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
5004         i40e_link_event(pf);
5005 }
5006
5007 /**
5008  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5009  * @pf: board private structure
5010  **/
5011 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5012 {
5013         struct i40e_arq_event_info event;
5014         struct i40e_hw *hw = &pf->hw;
5015         u16 pending, i = 0;
5016         i40e_status ret;
5017         u16 opcode;
5018         u32 val;
5019
5020         if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state))
5021                 return;
5022
5023         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
5024         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
5025         if (!event.msg_buf)
5026                 return;
5027
5028         do {
5029                 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
5030                 ret = i40e_clean_arq_element(hw, &event, &pending);
5031                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
5032                         dev_info(&pf->pdev->dev, "No ARQ event found\n");
5033                         break;
5034                 } else if (ret) {
5035                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5036                         break;
5037                 }
5038
5039                 opcode = le16_to_cpu(event.desc.opcode);
5040                 switch (opcode) {
5041
5042                 case i40e_aqc_opc_get_link_status:
5043                         i40e_handle_link_event(pf, &event);
5044                         break;
5045                 case i40e_aqc_opc_send_msg_to_pf:
5046                         ret = i40e_vc_process_vf_msg(pf,
5047                                         le16_to_cpu(event.desc.retval),
5048                                         le32_to_cpu(event.desc.cookie_high),
5049                                         le32_to_cpu(event.desc.cookie_low),
5050                                         event.msg_buf,
5051                                         event.msg_size);
5052                         break;
5053                 case i40e_aqc_opc_lldp_update_mib:
5054                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5055 #ifdef CONFIG_I40E_DCB
5056                         rtnl_lock();
5057                         ret = i40e_handle_lldp_event(pf, &event);
5058                         rtnl_unlock();
5059 #endif /* CONFIG_I40E_DCB */
5060                         break;
5061                 case i40e_aqc_opc_event_lan_overflow:
5062                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5063                         i40e_handle_lan_overflow_event(pf, &event);
5064                         break;
5065                 case i40e_aqc_opc_send_msg_to_peer:
5066                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5067                         break;
5068                 default:
5069                         dev_info(&pf->pdev->dev,
5070                                  "ARQ Error: Unknown event 0x%04x received\n",
5071                                  opcode);
5072                         break;
5073                 }
5074         } while (pending && (i++ < pf->adminq_work_limit));
5075
5076         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5077         /* re-enable Admin queue interrupt cause */
5078         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5079         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5080         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5081         i40e_flush(hw);
5082
5083         kfree(event.msg_buf);
5084 }
5085
5086 /**
5087  * i40e_verify_eeprom - make sure eeprom is good to use
5088  * @pf: board private structure
5089  **/
5090 static void i40e_verify_eeprom(struct i40e_pf *pf)
5091 {
5092         int err;
5093
5094         err = i40e_diag_eeprom_test(&pf->hw);
5095         if (err) {
5096                 /* retry in case of garbage read */
5097                 err = i40e_diag_eeprom_test(&pf->hw);
5098                 if (err) {
5099                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5100                                  err);
5101                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5102                 }
5103         }
5104
5105         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5106                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5107                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5108         }
5109 }
5110
5111 /**
5112  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5113  * @veb: pointer to the VEB instance
5114  *
5115  * This is a recursive function that first builds the attached VSIs then
5116  * recurses in to build the next layer of VEB.  We track the connections
5117  * through our own index numbers because the seid's from the HW could
5118  * change across the reset.
5119  **/
5120 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5121 {
5122         struct i40e_vsi *ctl_vsi = NULL;
5123         struct i40e_pf *pf = veb->pf;
5124         int v, veb_idx;
5125         int ret;
5126
5127         /* build VSI that owns this VEB, temporarily attached to base VEB */
5128         for (v = 0; v < pf->hw.func_caps.num_vsis && !ctl_vsi; v++) {
5129                 if (pf->vsi[v] &&
5130                     pf->vsi[v]->veb_idx == veb->idx &&
5131                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5132                         ctl_vsi = pf->vsi[v];
5133                         break;
5134                 }
5135         }
5136         if (!ctl_vsi) {
5137                 dev_info(&pf->pdev->dev,
5138                          "missing owner VSI for veb_idx %d\n", veb->idx);
5139                 ret = -ENOENT;
5140                 goto end_reconstitute;
5141         }
5142         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5143                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5144         ret = i40e_add_vsi(ctl_vsi);
5145         if (ret) {
5146                 dev_info(&pf->pdev->dev,
5147                          "rebuild of owner VSI failed: %d\n", ret);
5148                 goto end_reconstitute;
5149         }
5150         i40e_vsi_reset_stats(ctl_vsi);
5151
5152         /* create the VEB in the switch and move the VSI onto the VEB */
5153         ret = i40e_add_veb(veb, ctl_vsi);
5154         if (ret)
5155                 goto end_reconstitute;
5156
5157         /* create the remaining VSIs attached to this VEB */
5158         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5159                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5160                         continue;
5161
5162                 if (pf->vsi[v]->veb_idx == veb->idx) {
5163                         struct i40e_vsi *vsi = pf->vsi[v];
5164                         vsi->uplink_seid = veb->seid;
5165                         ret = i40e_add_vsi(vsi);
5166                         if (ret) {
5167                                 dev_info(&pf->pdev->dev,
5168                                          "rebuild of vsi_idx %d failed: %d\n",
5169                                          v, ret);
5170                                 goto end_reconstitute;
5171                         }
5172                         i40e_vsi_reset_stats(vsi);
5173                 }
5174         }
5175
5176         /* create any VEBs attached to this VEB - RECURSION */
5177         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5178                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5179                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5180                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5181                         if (ret)
5182                                 break;
5183                 }
5184         }
5185
5186 end_reconstitute:
5187         return ret;
5188 }
5189
5190 /**
5191  * i40e_get_capabilities - get info about the HW
5192  * @pf: the PF struct
5193  **/
5194 static int i40e_get_capabilities(struct i40e_pf *pf)
5195 {
5196         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5197         u16 data_size;
5198         int buf_len;
5199         int err;
5200
5201         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5202         do {
5203                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5204                 if (!cap_buf)
5205                         return -ENOMEM;
5206
5207                 /* this loads the data into the hw struct for us */
5208                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5209                                             &data_size,
5210                                             i40e_aqc_opc_list_func_capabilities,
5211                                             NULL);
5212                 /* data loaded, buffer no longer needed */
5213                 kfree(cap_buf);
5214
5215                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5216                         /* retry with a larger buffer */
5217                         buf_len = data_size;
5218                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5219                         dev_info(&pf->pdev->dev,
5220                                  "capability discovery failed: aq=%d\n",
5221                                  pf->hw.aq.asq_last_status);
5222                         return -ENODEV;
5223                 }
5224         } while (err);
5225
5226         /* increment MSI-X count because current FW skips one */
5227         pf->hw.func_caps.num_msix_vectors++;
5228
5229         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5230             (pf->hw.aq.fw_maj_ver < 2)) {
5231                 pf->hw.func_caps.num_msix_vectors++;
5232                 pf->hw.func_caps.num_msix_vectors_vf++;
5233         }
5234
5235         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5236                 dev_info(&pf->pdev->dev,
5237                          "pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n",
5238                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5239                          pf->hw.func_caps.num_msix_vectors,
5240                          pf->hw.func_caps.num_msix_vectors_vf,
5241                          pf->hw.func_caps.fd_filters_guaranteed,
5242                          pf->hw.func_caps.fd_filters_best_effort,
5243                          pf->hw.func_caps.num_tx_qp,
5244                          pf->hw.func_caps.num_vsis);
5245
5246 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5247                        + pf->hw.func_caps.num_vfs)
5248         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5249                 dev_info(&pf->pdev->dev,
5250                          "got num_vsis %d, setting num_vsis to %d\n",
5251                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5252                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5253         }
5254
5255         return 0;
5256 }
5257
5258 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5259
5260 /**
5261  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5262  * @pf: board private structure
5263  **/
5264 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5265 {
5266         struct i40e_vsi *vsi;
5267         bool new_vsi = false;
5268         int err, i;
5269
5270         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
5271                 return;
5272
5273         /* find existing VSI and see if it needs configuring */
5274         vsi = NULL;
5275         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5276                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5277                         vsi = pf->vsi[i];
5278                         break;
5279                 }
5280         }
5281
5282         /* create a new VSI if none exists */
5283         if (!vsi) {
5284                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
5285                                      pf->vsi[pf->lan_vsi]->seid, 0);
5286                 if (!vsi) {
5287                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5288                         goto err_vsi;
5289                 }
5290                 new_vsi = true;
5291         }
5292         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
5293
5294         err = i40e_vsi_setup_tx_resources(vsi);
5295         if (err)
5296                 goto err_setup_tx;
5297         err = i40e_vsi_setup_rx_resources(vsi);
5298         if (err)
5299                 goto err_setup_rx;
5300
5301         if (new_vsi) {
5302                 char int_name[IFNAMSIZ + 9];
5303                 err = i40e_vsi_configure(vsi);
5304                 if (err)
5305                         goto err_setup_rx;
5306                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
5307                          dev_driver_string(&pf->pdev->dev));
5308                 err = i40e_vsi_request_irq(vsi, int_name);
5309                 if (err)
5310                         goto err_setup_rx;
5311                 err = i40e_up_complete(vsi);
5312                 if (err)
5313                         goto err_up_complete;
5314                 clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
5315         }
5316
5317         return;
5318
5319 err_up_complete:
5320         i40e_down(vsi);
5321         i40e_vsi_free_irq(vsi);
5322 err_setup_rx:
5323         i40e_vsi_free_rx_resources(vsi);
5324 err_setup_tx:
5325         i40e_vsi_free_tx_resources(vsi);
5326 err_vsi:
5327         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
5328         i40e_vsi_clear(vsi);
5329 }
5330
5331 /**
5332  * i40e_fdir_teardown - release the Flow Director resources
5333  * @pf: board private structure
5334  **/
5335 static void i40e_fdir_teardown(struct i40e_pf *pf)
5336 {
5337         int i;
5338
5339         i40e_fdir_filter_exit(pf);
5340         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5341                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5342                         i40e_vsi_release(pf->vsi[i]);
5343                         break;
5344                 }
5345         }
5346 }
5347
5348 /**
5349  * i40e_prep_for_reset - prep for the core to reset
5350  * @pf: board private structure
5351  *
5352  * Close up the VFs and other things in prep for pf Reset.
5353   **/
5354 static int i40e_prep_for_reset(struct i40e_pf *pf)
5355 {
5356         struct i40e_hw *hw = &pf->hw;
5357         i40e_status ret;
5358         u32 v;
5359
5360         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
5361         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
5362                 return 0;
5363
5364         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
5365
5366         if (i40e_check_asq_alive(hw))
5367                 i40e_vc_notify_reset(pf);
5368
5369         /* quiesce the VSIs and their queues that are not already DOWN */
5370         i40e_pf_quiesce_all_vsi(pf);
5371
5372         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5373                 if (pf->vsi[v])
5374                         pf->vsi[v]->seid = 0;
5375         }
5376
5377         i40e_shutdown_adminq(&pf->hw);
5378
5379         /* call shutdown HMC */
5380         ret = i40e_shutdown_lan_hmc(hw);
5381         if (ret) {
5382                 dev_info(&pf->pdev->dev, "shutdown_lan_hmc failed: %d\n", ret);
5383                 clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5384         }
5385         return ret;
5386 }
5387
5388 /**
5389  * i40e_reset_and_rebuild - reset and rebuild using a saved config
5390  * @pf: board private structure
5391  * @reinit: if the Main VSI needs to re-initialized.
5392  **/
5393 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
5394 {
5395         struct i40e_driver_version dv;
5396         struct i40e_hw *hw = &pf->hw;
5397         i40e_status ret;
5398         u32 v;
5399
5400         /* Now we wait for GRST to settle out.
5401          * We don't have to delete the VEBs or VSIs from the hw switch
5402          * because the reset will make them disappear.
5403          */
5404         ret = i40e_pf_reset(hw);
5405         if (ret)
5406                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
5407         pf->pfr_count++;
5408
5409         if (test_bit(__I40E_DOWN, &pf->state))
5410                 goto end_core_reset;
5411         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
5412
5413         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
5414         ret = i40e_init_adminq(&pf->hw);
5415         if (ret) {
5416                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
5417                 goto end_core_reset;
5418         }
5419
5420         /* re-verify the eeprom if we just had an EMP reset */
5421         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
5422                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
5423                 i40e_verify_eeprom(pf);
5424         }
5425
5426         ret = i40e_get_capabilities(pf);
5427         if (ret) {
5428                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
5429                          ret);
5430                 goto end_core_reset;
5431         }
5432
5433         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
5434                                 hw->func_caps.num_rx_qp,
5435                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
5436         if (ret) {
5437                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
5438                 goto end_core_reset;
5439         }
5440         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
5441         if (ret) {
5442                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
5443                 goto end_core_reset;
5444         }
5445
5446 #ifdef CONFIG_I40E_DCB
5447         ret = i40e_init_pf_dcb(pf);
5448         if (ret) {
5449                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
5450                 goto end_core_reset;
5451         }
5452 #endif /* CONFIG_I40E_DCB */
5453
5454         /* do basic switch setup */
5455         ret = i40e_setup_pf_switch(pf, reinit);
5456         if (ret)
5457                 goto end_core_reset;
5458
5459         /* Rebuild the VSIs and VEBs that existed before reset.
5460          * They are still in our local switch element arrays, so only
5461          * need to rebuild the switch model in the HW.
5462          *
5463          * If there were VEBs but the reconstitution failed, we'll try
5464          * try to recover minimal use by getting the basic PF VSI working.
5465          */
5466         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
5467                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
5468                 /* find the one VEB connected to the MAC, and find orphans */
5469                 for (v = 0; v < I40E_MAX_VEB; v++) {
5470                         if (!pf->veb[v])
5471                                 continue;
5472
5473                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
5474                             pf->veb[v]->uplink_seid == 0) {
5475                                 ret = i40e_reconstitute_veb(pf->veb[v]);
5476
5477                                 if (!ret)
5478                                         continue;
5479
5480                                 /* If Main VEB failed, we're in deep doodoo,
5481                                  * so give up rebuilding the switch and set up
5482                                  * for minimal rebuild of PF VSI.
5483                                  * If orphan failed, we'll report the error
5484                                  * but try to keep going.
5485                                  */
5486                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
5487                                         dev_info(&pf->pdev->dev,
5488                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
5489                                                  ret);
5490                                         pf->vsi[pf->lan_vsi]->uplink_seid
5491                                                                 = pf->mac_seid;
5492                                         break;
5493                                 } else if (pf->veb[v]->uplink_seid == 0) {
5494                                         dev_info(&pf->pdev->dev,
5495                                                  "rebuild of orphan VEB failed: %d\n",
5496                                                  ret);
5497                                 }
5498                         }
5499                 }
5500         }
5501
5502         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
5503                 dev_info(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
5504                 /* no VEB, so rebuild only the Main VSI */
5505                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
5506                 if (ret) {
5507                         dev_info(&pf->pdev->dev,
5508                                  "rebuild of Main VSI failed: %d\n", ret);
5509                         goto end_core_reset;
5510                 }
5511         }
5512
5513         /* reinit the misc interrupt */
5514         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5515                 ret = i40e_setup_misc_vector(pf);
5516
5517         /* restart the VSIs that were rebuilt and running before the reset */
5518         i40e_pf_unquiesce_all_vsi(pf);
5519
5520         if (pf->num_alloc_vfs) {
5521                 for (v = 0; v < pf->num_alloc_vfs; v++)
5522                         i40e_reset_vf(&pf->vf[v], true);
5523         }
5524
5525         /* tell the firmware that we're starting */
5526         dv.major_version = DRV_VERSION_MAJOR;
5527         dv.minor_version = DRV_VERSION_MINOR;
5528         dv.build_version = DRV_VERSION_BUILD;
5529         dv.subbuild_version = 0;
5530         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
5531
5532         dev_info(&pf->pdev->dev, "reset complete\n");
5533
5534 end_core_reset:
5535         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5536 }
5537
5538 /**
5539  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
5540  * @pf: board private structure
5541  *
5542  * Close up the VFs and other things in prep for a Core Reset,
5543  * then get ready to rebuild the world.
5544  **/
5545 static void i40e_handle_reset_warning(struct i40e_pf *pf)
5546 {
5547         i40e_status ret;
5548
5549         ret = i40e_prep_for_reset(pf);
5550         if (!ret)
5551                 i40e_reset_and_rebuild(pf, false);
5552 }
5553
5554 /**
5555  * i40e_handle_mdd_event
5556  * @pf: pointer to the pf structure
5557  *
5558  * Called from the MDD irq handler to identify possibly malicious vfs
5559  **/
5560 static void i40e_handle_mdd_event(struct i40e_pf *pf)
5561 {
5562         struct i40e_hw *hw = &pf->hw;
5563         bool mdd_detected = false;
5564         struct i40e_vf *vf;
5565         u32 reg;
5566         int i;
5567
5568         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
5569                 return;
5570
5571         /* find what triggered the MDD event */
5572         reg = rd32(hw, I40E_GL_MDET_TX);
5573         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
5574                 u8 func = (reg & I40E_GL_MDET_TX_FUNCTION_MASK)
5575                                 >> I40E_GL_MDET_TX_FUNCTION_SHIFT;
5576                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT)
5577                                 >> I40E_GL_MDET_TX_EVENT_SHIFT;
5578                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK)
5579                                 >> I40E_GL_MDET_TX_QUEUE_SHIFT;
5580                 dev_info(&pf->pdev->dev,
5581                          "Malicious Driver Detection event 0x%02x on TX queue %d of function 0x%02x\n",
5582                          event, queue, func);
5583                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
5584                 mdd_detected = true;
5585         }
5586         reg = rd32(hw, I40E_GL_MDET_RX);
5587         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
5588                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK)
5589                                 >> I40E_GL_MDET_RX_FUNCTION_SHIFT;
5590                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT)
5591                                 >> I40E_GL_MDET_RX_EVENT_SHIFT;
5592                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK)
5593                                 >> I40E_GL_MDET_RX_QUEUE_SHIFT;
5594                 dev_info(&pf->pdev->dev,
5595                          "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
5596                          event, queue, func);
5597                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
5598                 mdd_detected = true;
5599         }
5600
5601         /* see if one of the VFs needs its hand slapped */
5602         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
5603                 vf = &(pf->vf[i]);
5604                 reg = rd32(hw, I40E_VP_MDET_TX(i));
5605                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
5606                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
5607                         vf->num_mdd_events++;
5608                         dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
5609                 }
5610
5611                 reg = rd32(hw, I40E_VP_MDET_RX(i));
5612                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
5613                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
5614                         vf->num_mdd_events++;
5615                         dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
5616                 }
5617
5618                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
5619                         dev_info(&pf->pdev->dev,
5620                                  "Too many MDD events on VF %d, disabled\n", i);
5621                         dev_info(&pf->pdev->dev,
5622                                  "Use PF Control I/F to re-enable the VF\n");
5623                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
5624                 }
5625         }
5626
5627         /* re-enable mdd interrupt cause */
5628         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
5629         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
5630         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
5631         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
5632         i40e_flush(hw);
5633 }
5634
5635 #ifdef CONFIG_I40E_VXLAN
5636 /**
5637  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
5638  * @pf: board private structure
5639  **/
5640 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
5641 {
5642         const int vxlan_hdr_qwords = 4;
5643         struct i40e_hw *hw = &pf->hw;
5644         i40e_status ret;
5645         u8 filter_index;
5646         __be16 port;
5647         int i;
5648
5649         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
5650                 return;
5651
5652         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
5653
5654         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
5655                 if (pf->pending_vxlan_bitmap & (1 << i)) {
5656                         pf->pending_vxlan_bitmap &= ~(1 << i);
5657                         port = pf->vxlan_ports[i];
5658                         ret = port ?
5659                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
5660                                                      vxlan_hdr_qwords,
5661                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
5662                                                      &filter_index, NULL)
5663                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
5664
5665                         if (ret) {
5666                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
5667                                          port ? "adding" : "deleting",
5668                                          ntohs(port), port ? i : i);
5669
5670                                 pf->vxlan_ports[i] = 0;
5671                         } else {
5672                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
5673                                          port ? "Added" : "Deleted",
5674                                          ntohs(port), port ? i : filter_index);
5675                         }
5676                 }
5677         }
5678 }
5679
5680 #endif
5681 /**
5682  * i40e_service_task - Run the driver's async subtasks
5683  * @work: pointer to work_struct containing our data
5684  **/
5685 static void i40e_service_task(struct work_struct *work)
5686 {
5687         struct i40e_pf *pf = container_of(work,
5688                                           struct i40e_pf,
5689                                           service_task);
5690         unsigned long start_time = jiffies;
5691
5692         i40e_reset_subtask(pf);
5693         i40e_handle_mdd_event(pf);
5694         i40e_vc_process_vflr_event(pf);
5695         i40e_watchdog_subtask(pf);
5696         i40e_fdir_reinit_subtask(pf);
5697         i40e_check_hang_subtask(pf);
5698         i40e_sync_filters_subtask(pf);
5699 #ifdef CONFIG_I40E_VXLAN
5700         i40e_sync_vxlan_filters_subtask(pf);
5701 #endif
5702         i40e_clean_adminq_subtask(pf);
5703
5704         i40e_service_event_complete(pf);
5705
5706         /* If the tasks have taken longer than one timer cycle or there
5707          * is more work to be done, reschedule the service task now
5708          * rather than wait for the timer to tick again.
5709          */
5710         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
5711             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
5712             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
5713             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
5714                 i40e_service_event_schedule(pf);
5715 }
5716
5717 /**
5718  * i40e_service_timer - timer callback
5719  * @data: pointer to PF struct
5720  **/
5721 static void i40e_service_timer(unsigned long data)
5722 {
5723         struct i40e_pf *pf = (struct i40e_pf *)data;
5724
5725         mod_timer(&pf->service_timer,
5726                   round_jiffies(jiffies + pf->service_timer_period));
5727         i40e_service_event_schedule(pf);
5728 }
5729
5730 /**
5731  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
5732  * @vsi: the VSI being configured
5733  **/
5734 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
5735 {
5736         struct i40e_pf *pf = vsi->back;
5737
5738         switch (vsi->type) {
5739         case I40E_VSI_MAIN:
5740                 vsi->alloc_queue_pairs = pf->num_lan_qps;
5741                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5742                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5743                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5744                         vsi->num_q_vectors = pf->num_lan_msix;
5745                 else
5746                         vsi->num_q_vectors = 1;
5747
5748                 break;
5749
5750         case I40E_VSI_FDIR:
5751                 vsi->alloc_queue_pairs = 1;
5752                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
5753                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5754                 vsi->num_q_vectors = 1;
5755                 break;
5756
5757         case I40E_VSI_VMDQ2:
5758                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
5759                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5760                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5761                 vsi->num_q_vectors = pf->num_vmdq_msix;
5762                 break;
5763
5764         case I40E_VSI_SRIOV:
5765                 vsi->alloc_queue_pairs = pf->num_vf_qps;
5766                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5767                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5768                 break;
5769
5770         default:
5771                 WARN_ON(1);
5772                 return -ENODATA;
5773         }
5774
5775         return 0;
5776 }
5777
5778 /**
5779  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
5780  * @type: VSI pointer
5781  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
5782  *
5783  * On error: returns error code (negative)
5784  * On success: returns 0
5785  **/
5786 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
5787 {
5788         int size;
5789         int ret = 0;
5790
5791         /* allocate memory for both Tx and Rx ring pointers */
5792         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
5793         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
5794         if (!vsi->tx_rings)
5795                 return -ENOMEM;
5796         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
5797
5798         if (alloc_qvectors) {
5799                 /* allocate memory for q_vector pointers */
5800                 size = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors;
5801                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
5802                 if (!vsi->q_vectors) {
5803                         ret = -ENOMEM;
5804                         goto err_vectors;
5805                 }
5806         }
5807         return ret;
5808
5809 err_vectors:
5810         kfree(vsi->tx_rings);
5811         return ret;
5812 }
5813
5814 /**
5815  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
5816  * @pf: board private structure
5817  * @type: type of VSI
5818  *
5819  * On error: returns error code (negative)
5820  * On success: returns vsi index in PF (positive)
5821  **/
5822 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
5823 {
5824         int ret = -ENODEV;
5825         struct i40e_vsi *vsi;
5826         int vsi_idx;
5827         int i;
5828
5829         /* Need to protect the allocation of the VSIs at the PF level */
5830         mutex_lock(&pf->switch_mutex);
5831
5832         /* VSI list may be fragmented if VSI creation/destruction has
5833          * been happening.  We can afford to do a quick scan to look
5834          * for any free VSIs in the list.
5835          *
5836          * find next empty vsi slot, looping back around if necessary
5837          */
5838         i = pf->next_vsi;
5839         while (i < pf->hw.func_caps.num_vsis && pf->vsi[i])
5840                 i++;
5841         if (i >= pf->hw.func_caps.num_vsis) {
5842                 i = 0;
5843                 while (i < pf->next_vsi && pf->vsi[i])
5844                         i++;
5845         }
5846
5847         if (i < pf->hw.func_caps.num_vsis && !pf->vsi[i]) {
5848                 vsi_idx = i;             /* Found one! */
5849         } else {
5850                 ret = -ENODEV;
5851                 goto unlock_pf;  /* out of VSI slots! */
5852         }
5853         pf->next_vsi = ++i;
5854
5855         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
5856         if (!vsi) {
5857                 ret = -ENOMEM;
5858                 goto unlock_pf;
5859         }
5860         vsi->type = type;
5861         vsi->back = pf;
5862         set_bit(__I40E_DOWN, &vsi->state);
5863         vsi->flags = 0;
5864         vsi->idx = vsi_idx;
5865         vsi->rx_itr_setting = pf->rx_itr_default;
5866         vsi->tx_itr_setting = pf->tx_itr_default;
5867         vsi->netdev_registered = false;
5868         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
5869         INIT_LIST_HEAD(&vsi->mac_filter_list);
5870
5871         ret = i40e_set_num_rings_in_vsi(vsi);
5872         if (ret)
5873                 goto err_rings;
5874
5875         ret = i40e_vsi_alloc_arrays(vsi, true);
5876         if (ret)
5877                 goto err_rings;
5878
5879         /* Setup default MSIX irq handler for VSI */
5880         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
5881
5882         pf->vsi[vsi_idx] = vsi;
5883         ret = vsi_idx;
5884         goto unlock_pf;
5885
5886 err_rings:
5887         pf->next_vsi = i - 1;
5888         kfree(vsi);
5889 unlock_pf:
5890         mutex_unlock(&pf->switch_mutex);
5891         return ret;
5892 }
5893
5894 /**
5895  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
5896  * @type: VSI pointer
5897  * @free_qvectors: a bool to specify if q_vectors need to be freed.
5898  *
5899  * On error: returns error code (negative)
5900  * On success: returns 0
5901  **/
5902 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
5903 {
5904         /* free the ring and vector containers */
5905         if (free_qvectors) {
5906                 kfree(vsi->q_vectors);
5907                 vsi->q_vectors = NULL;
5908         }
5909         kfree(vsi->tx_rings);
5910         vsi->tx_rings = NULL;
5911         vsi->rx_rings = NULL;
5912 }
5913
5914 /**
5915  * i40e_vsi_clear - Deallocate the VSI provided
5916  * @vsi: the VSI being un-configured
5917  **/
5918 static int i40e_vsi_clear(struct i40e_vsi *vsi)
5919 {
5920         struct i40e_pf *pf;
5921
5922         if (!vsi)
5923                 return 0;
5924
5925         if (!vsi->back)
5926                 goto free_vsi;
5927         pf = vsi->back;
5928
5929         mutex_lock(&pf->switch_mutex);
5930         if (!pf->vsi[vsi->idx]) {
5931                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
5932                         vsi->idx, vsi->idx, vsi, vsi->type);
5933                 goto unlock_vsi;
5934         }
5935
5936         if (pf->vsi[vsi->idx] != vsi) {
5937                 dev_err(&pf->pdev->dev,
5938                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
5939                         pf->vsi[vsi->idx]->idx,
5940                         pf->vsi[vsi->idx],
5941                         pf->vsi[vsi->idx]->type,
5942                         vsi->idx, vsi, vsi->type);
5943                 goto unlock_vsi;
5944         }
5945
5946         /* updates the pf for this cleared vsi */
5947         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
5948         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
5949
5950         i40e_vsi_free_arrays(vsi, true);
5951
5952         pf->vsi[vsi->idx] = NULL;
5953         if (vsi->idx < pf->next_vsi)
5954                 pf->next_vsi = vsi->idx;
5955
5956 unlock_vsi:
5957         mutex_unlock(&pf->switch_mutex);
5958 free_vsi:
5959         kfree(vsi);
5960
5961         return 0;
5962 }
5963
5964 /**
5965  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
5966  * @vsi: the VSI being cleaned
5967  **/
5968 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
5969 {
5970         int i;
5971
5972         if (vsi->tx_rings && vsi->tx_rings[0]) {
5973                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5974                         kfree_rcu(vsi->tx_rings[i], rcu);
5975                         vsi->tx_rings[i] = NULL;
5976                         vsi->rx_rings[i] = NULL;
5977                 }
5978         }
5979 }
5980
5981 /**
5982  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
5983  * @vsi: the VSI being configured
5984  **/
5985 static int i40e_alloc_rings(struct i40e_vsi *vsi)
5986 {
5987         struct i40e_pf *pf = vsi->back;
5988         int i;
5989
5990         /* Set basic values in the rings to be used later during open() */
5991         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5992                 struct i40e_ring *tx_ring;
5993                 struct i40e_ring *rx_ring;
5994
5995                 /* allocate space for both Tx and Rx in one shot */
5996                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
5997                 if (!tx_ring)
5998                         goto err_out;
5999
6000                 tx_ring->queue_index = i;
6001                 tx_ring->reg_idx = vsi->base_queue + i;
6002                 tx_ring->ring_active = false;
6003                 tx_ring->vsi = vsi;
6004                 tx_ring->netdev = vsi->netdev;
6005                 tx_ring->dev = &pf->pdev->dev;
6006                 tx_ring->count = vsi->num_desc;
6007                 tx_ring->size = 0;
6008                 tx_ring->dcb_tc = 0;
6009                 vsi->tx_rings[i] = tx_ring;
6010
6011                 rx_ring = &tx_ring[1];
6012                 rx_ring->queue_index = i;
6013                 rx_ring->reg_idx = vsi->base_queue + i;
6014                 rx_ring->ring_active = false;
6015                 rx_ring->vsi = vsi;
6016                 rx_ring->netdev = vsi->netdev;
6017                 rx_ring->dev = &pf->pdev->dev;
6018                 rx_ring->count = vsi->num_desc;
6019                 rx_ring->size = 0;
6020                 rx_ring->dcb_tc = 0;
6021                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6022                         set_ring_16byte_desc_enabled(rx_ring);
6023                 else
6024                         clear_ring_16byte_desc_enabled(rx_ring);
6025                 vsi->rx_rings[i] = rx_ring;
6026         }
6027
6028         return 0;
6029
6030 err_out:
6031         i40e_vsi_clear_rings(vsi);
6032         return -ENOMEM;
6033 }
6034
6035 /**
6036  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6037  * @pf: board private structure
6038  * @vectors: the number of MSI-X vectors to request
6039  *
6040  * Returns the number of vectors reserved, or error
6041  **/
6042 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6043 {
6044         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6045                                         I40E_MIN_MSIX, vectors);
6046         if (vectors < 0) {
6047                 dev_info(&pf->pdev->dev,
6048                          "MSI-X vector reservation failed: %d\n", vectors);
6049                 vectors = 0;
6050         }
6051
6052         pf->num_msix_entries = vectors;
6053
6054         return vectors;
6055 }
6056
6057 /**
6058  * i40e_init_msix - Setup the MSIX capability
6059  * @pf: board private structure
6060  *
6061  * Work with the OS to set up the MSIX vectors needed.
6062  *
6063  * Returns 0 on success, negative on failure
6064  **/
6065 static int i40e_init_msix(struct i40e_pf *pf)
6066 {
6067         i40e_status err = 0;
6068         struct i40e_hw *hw = &pf->hw;
6069         int v_budget, i;
6070         int vec;
6071
6072         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6073                 return -ENODEV;
6074
6075         /* The number of vectors we'll request will be comprised of:
6076          *   - Add 1 for "other" cause for Admin Queue events, etc.
6077          *   - The number of LAN queue pairs
6078          *      - Queues being used for RSS.
6079          *              We don't need as many as max_rss_size vectors.
6080          *              use rss_size instead in the calculation since that
6081          *              is governed by number of cpus in the system.
6082          *      - assumes symmetric Tx/Rx pairing
6083          *   - The number of VMDq pairs
6084          * Once we count this up, try the request.
6085          *
6086          * If we can't get what we want, we'll simplify to nearly nothing
6087          * and try again.  If that still fails, we punt.
6088          */
6089         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6090         pf->num_vmdq_msix = pf->num_vmdq_qps;
6091         v_budget = 1 + pf->num_lan_msix;
6092         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6093         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6094                 v_budget++;
6095
6096         /* Scale down if necessary, and the rings will share vectors */
6097         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
6098
6099         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6100                                    GFP_KERNEL);
6101         if (!pf->msix_entries)
6102                 return -ENOMEM;
6103
6104         for (i = 0; i < v_budget; i++)
6105                 pf->msix_entries[i].entry = i;
6106         vec = i40e_reserve_msix_vectors(pf, v_budget);
6107         if (vec < I40E_MIN_MSIX) {
6108                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6109                 kfree(pf->msix_entries);
6110                 pf->msix_entries = NULL;
6111                 return -ENODEV;
6112
6113         } else if (vec == I40E_MIN_MSIX) {
6114                 /* Adjust for minimal MSIX use */
6115                 dev_info(&pf->pdev->dev, "Features disabled, not enough MSI-X vectors\n");
6116                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
6117                 pf->num_vmdq_vsis = 0;
6118                 pf->num_vmdq_qps = 0;
6119                 pf->num_vmdq_msix = 0;
6120                 pf->num_lan_qps = 1;
6121                 pf->num_lan_msix = 1;
6122
6123         } else if (vec != v_budget) {
6124                 /* Scale vector usage down */
6125                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6126                 vec--;                    /* reserve the misc vector */
6127
6128                 /* partition out the remaining vectors */
6129                 switch (vec) {
6130                 case 2:
6131                         pf->num_vmdq_vsis = 1;
6132                         pf->num_lan_msix = 1;
6133                         break;
6134                 case 3:
6135                         pf->num_vmdq_vsis = 1;
6136                         pf->num_lan_msix = 2;
6137                         break;
6138                 default:
6139                         pf->num_lan_msix = min_t(int, (vec / 2),
6140                                                  pf->num_lan_qps);
6141                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6142                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6143                         break;
6144                 }
6145         }
6146
6147         return err;
6148 }
6149
6150 /**
6151  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6152  * @vsi: the VSI being configured
6153  * @v_idx: index of the vector in the vsi struct
6154  *
6155  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
6156  **/
6157 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6158 {
6159         struct i40e_q_vector *q_vector;
6160
6161         /* allocate q_vector */
6162         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
6163         if (!q_vector)
6164                 return -ENOMEM;
6165
6166         q_vector->vsi = vsi;
6167         q_vector->v_idx = v_idx;
6168         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
6169         if (vsi->netdev)
6170                 netif_napi_add(vsi->netdev, &q_vector->napi,
6171                                i40e_napi_poll, vsi->work_limit);
6172
6173         q_vector->rx.latency_range = I40E_LOW_LATENCY;
6174         q_vector->tx.latency_range = I40E_LOW_LATENCY;
6175
6176         /* tie q_vector and vsi together */
6177         vsi->q_vectors[v_idx] = q_vector;
6178
6179         return 0;
6180 }
6181
6182 /**
6183  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
6184  * @vsi: the VSI being configured
6185  *
6186  * We allocate one q_vector per queue interrupt.  If allocation fails we
6187  * return -ENOMEM.
6188  **/
6189 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
6190 {
6191         struct i40e_pf *pf = vsi->back;
6192         int v_idx, num_q_vectors;
6193         int err;
6194
6195         /* if not MSIX, give the one vector only to the LAN VSI */
6196         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6197                 num_q_vectors = vsi->num_q_vectors;
6198         else if (vsi == pf->vsi[pf->lan_vsi])
6199                 num_q_vectors = 1;
6200         else
6201                 return -EINVAL;
6202
6203         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
6204                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
6205                 if (err)
6206                         goto err_out;
6207         }
6208
6209         return 0;
6210
6211 err_out:
6212         while (v_idx--)
6213                 i40e_free_q_vector(vsi, v_idx);
6214
6215         return err;
6216 }
6217
6218 /**
6219  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
6220  * @pf: board private structure to initialize
6221  **/
6222 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
6223 {
6224         int err = 0;
6225
6226         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
6227                 err = i40e_init_msix(pf);
6228                 if (err) {
6229                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
6230                                        I40E_FLAG_RSS_ENABLED    |
6231                                        I40E_FLAG_DCB_ENABLED    |
6232                                        I40E_FLAG_SRIOV_ENABLED  |
6233                                        I40E_FLAG_FD_SB_ENABLED  |
6234                                        I40E_FLAG_FD_ATR_ENABLED |
6235                                        I40E_FLAG_VMDQ_ENABLED);
6236
6237                         /* rework the queue expectations without MSIX */
6238                         i40e_determine_queue_usage(pf);
6239                 }
6240         }
6241
6242         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
6243             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
6244                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
6245                 err = pci_enable_msi(pf->pdev);
6246                 if (err) {
6247                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
6248                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
6249                 }
6250         }
6251
6252         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
6253                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6254
6255         /* track first vector for misc interrupts */
6256         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
6257 }
6258
6259 /**
6260  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
6261  * @pf: board private structure
6262  *
6263  * This sets up the handler for MSIX 0, which is used to manage the
6264  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
6265  * when in MSI or Legacy interrupt mode.
6266  **/
6267 static int i40e_setup_misc_vector(struct i40e_pf *pf)
6268 {
6269         struct i40e_hw *hw = &pf->hw;
6270         int err = 0;
6271
6272         /* Only request the irq if this is the first time through, and
6273          * not when we're rebuilding after a Reset
6274          */
6275         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6276                 err = request_irq(pf->msix_entries[0].vector,
6277                                   i40e_intr, 0, pf->misc_int_name, pf);
6278                 if (err) {
6279                         dev_info(&pf->pdev->dev,
6280                                  "request_irq for %s failed: %d\n",
6281                                  pf->misc_int_name, err);
6282                         return -EFAULT;
6283                 }
6284         }
6285
6286         i40e_enable_misc_int_causes(hw);
6287
6288         /* associate no queues to the misc vector */
6289         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
6290         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
6291
6292         i40e_flush(hw);
6293
6294         i40e_irq_dynamic_enable_icr0(pf);
6295
6296         return err;
6297 }
6298
6299 /**
6300  * i40e_config_rss - Prepare for RSS if used
6301  * @pf: board private structure
6302  **/
6303 static int i40e_config_rss(struct i40e_pf *pf)
6304 {
6305         /* Set of random keys generated using kernel random number generator */
6306         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
6307                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
6308                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
6309                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
6310         struct i40e_hw *hw = &pf->hw;
6311         u32 lut = 0;
6312         int i, j;
6313         u64 hena;
6314
6315         /* Fill out hash function seed */
6316         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
6317                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
6318
6319         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
6320         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
6321                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
6322         hena |= I40E_DEFAULT_RSS_HENA;
6323         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
6324         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
6325
6326         /* Populate the LUT with max no. of queues in round robin fashion */
6327         for (i = 0, j = 0; i < pf->hw.func_caps.rss_table_size; i++, j++) {
6328
6329                 /* The assumption is that lan qp count will be the highest
6330                  * qp count for any PF VSI that needs RSS.
6331                  * If multiple VSIs need RSS support, all the qp counts
6332                  * for those VSIs should be a power of 2 for RSS to work.
6333                  * If LAN VSI is the only consumer for RSS then this requirement
6334                  * is not necessary.
6335                  */
6336                 if (j == pf->rss_size)
6337                         j = 0;
6338                 /* lut = 4-byte sliding window of 4 lut entries */
6339                 lut = (lut << 8) | (j &
6340                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
6341                 /* On i = 3, we have 4 entries in lut; write to the register */
6342                 if ((i & 3) == 3)
6343                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
6344         }
6345         i40e_flush(hw);
6346
6347         return 0;
6348 }
6349
6350 /**
6351  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
6352  * @pf: board private structure
6353  * @queue_count: the requested queue count for rss.
6354  *
6355  * returns 0 if rss is not enabled, if enabled returns the final rss queue
6356  * count which may be different from the requested queue count.
6357  **/
6358 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
6359 {
6360         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
6361                 return 0;
6362
6363         queue_count = min_t(int, queue_count, pf->rss_size_max);
6364         queue_count = rounddown_pow_of_two(queue_count);
6365
6366         if (queue_count != pf->rss_size) {
6367                 i40e_prep_for_reset(pf);
6368
6369                 pf->rss_size = queue_count;
6370
6371                 i40e_reset_and_rebuild(pf, true);
6372                 i40e_config_rss(pf);
6373         }
6374         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
6375         return pf->rss_size;
6376 }
6377
6378 /**
6379  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
6380  * @pf: board private structure to initialize
6381  *
6382  * i40e_sw_init initializes the Adapter private data structure.
6383  * Fields are initialized based on PCI device information and
6384  * OS network device settings (MTU size).
6385  **/
6386 static int i40e_sw_init(struct i40e_pf *pf)
6387 {
6388         int err = 0;
6389         int size;
6390
6391         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
6392                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
6393         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
6394         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
6395                 if (I40E_DEBUG_USER & debug)
6396                         pf->hw.debug_mask = debug;
6397                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
6398                                                 I40E_DEFAULT_MSG_ENABLE);
6399         }
6400
6401         /* Set default capability flags */
6402         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
6403                     I40E_FLAG_MSI_ENABLED     |
6404                     I40E_FLAG_MSIX_ENABLED    |
6405                     I40E_FLAG_RX_1BUF_ENABLED;
6406
6407         /* Depending on PF configurations, it is possible that the RSS
6408          * maximum might end up larger than the available queues
6409          */
6410         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
6411         pf->rss_size_max = min_t(int, pf->rss_size_max,
6412                                  pf->hw.func_caps.num_tx_qp);
6413         if (pf->hw.func_caps.rss) {
6414                 pf->flags |= I40E_FLAG_RSS_ENABLED;
6415                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
6416                 pf->rss_size = rounddown_pow_of_two(pf->rss_size);
6417         } else {
6418                 pf->rss_size = 1;
6419         }
6420
6421         /* MFP mode enabled */
6422         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
6423                 pf->flags |= I40E_FLAG_MFP_ENABLED;
6424                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
6425         }
6426
6427         /* FW/NVM is not yet fixed in this regard */
6428         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
6429             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
6430                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6431                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
6432                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
6433                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6434                 } else {
6435                         dev_info(&pf->pdev->dev,
6436                                  "Flow Director Sideband mode Disabled in MFP mode\n");
6437                 }
6438                 pf->fdir_pf_filter_count =
6439                                  pf->hw.func_caps.fd_filters_guaranteed;
6440                 pf->hw.fdir_shared_filter_count =
6441                                  pf->hw.func_caps.fd_filters_best_effort;
6442         }
6443
6444         if (pf->hw.func_caps.vmdq) {
6445                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
6446                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
6447                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
6448         }
6449
6450 #ifdef CONFIG_PCI_IOV
6451         if (pf->hw.func_caps.num_vfs) {
6452                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
6453                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
6454                 pf->num_req_vfs = min_t(int,
6455                                         pf->hw.func_caps.num_vfs,
6456                                         I40E_MAX_VF_COUNT);
6457         }
6458 #endif /* CONFIG_PCI_IOV */
6459         pf->eeprom_version = 0xDEAD;
6460         pf->lan_veb = I40E_NO_VEB;
6461         pf->lan_vsi = I40E_NO_VSI;
6462
6463         /* set up queue assignment tracking */
6464         size = sizeof(struct i40e_lump_tracking)
6465                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
6466         pf->qp_pile = kzalloc(size, GFP_KERNEL);
6467         if (!pf->qp_pile) {
6468                 err = -ENOMEM;
6469                 goto sw_init_done;
6470         }
6471         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
6472         pf->qp_pile->search_hint = 0;
6473
6474         /* set up vector assignment tracking */
6475         size = sizeof(struct i40e_lump_tracking)
6476                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
6477         pf->irq_pile = kzalloc(size, GFP_KERNEL);
6478         if (!pf->irq_pile) {
6479                 kfree(pf->qp_pile);
6480                 err = -ENOMEM;
6481                 goto sw_init_done;
6482         }
6483         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
6484         pf->irq_pile->search_hint = 0;
6485
6486         mutex_init(&pf->switch_mutex);
6487
6488 sw_init_done:
6489         return err;
6490 }
6491
6492 /**
6493  * i40e_set_ntuple - set the ntuple feature flag and take action
6494  * @pf: board private structure to initialize
6495  * @features: the feature set that the stack is suggesting
6496  *
6497  * returns a bool to indicate if reset needs to happen
6498  **/
6499 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
6500 {
6501         bool need_reset = false;
6502
6503         /* Check if Flow Director n-tuple support was enabled or disabled.  If
6504          * the state changed, we need to reset.
6505          */
6506         if (features & NETIF_F_NTUPLE) {
6507                 /* Enable filters and mark for reset */
6508                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6509                         need_reset = true;
6510                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6511         } else {
6512                 /* turn off filters, mark for reset and clear SW filter list */
6513                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
6514                         need_reset = true;
6515                         i40e_fdir_filter_exit(pf);
6516                 }
6517                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6518                 /* if ATR was disabled it can be re-enabled. */
6519                 if (!(pf->flags & I40E_FLAG_FD_ATR_ENABLED))
6520                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6521         }
6522         return need_reset;
6523 }
6524
6525 /**
6526  * i40e_set_features - set the netdev feature flags
6527  * @netdev: ptr to the netdev being adjusted
6528  * @features: the feature set that the stack is suggesting
6529  **/
6530 static int i40e_set_features(struct net_device *netdev,
6531                              netdev_features_t features)
6532 {
6533         struct i40e_netdev_priv *np = netdev_priv(netdev);
6534         struct i40e_vsi *vsi = np->vsi;
6535         struct i40e_pf *pf = vsi->back;
6536         bool need_reset;
6537
6538         if (features & NETIF_F_HW_VLAN_CTAG_RX)
6539                 i40e_vlan_stripping_enable(vsi);
6540         else
6541                 i40e_vlan_stripping_disable(vsi);
6542
6543         need_reset = i40e_set_ntuple(pf, features);
6544
6545         if (need_reset)
6546                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
6547
6548         return 0;
6549 }
6550
6551 #ifdef CONFIG_I40E_VXLAN
6552 /**
6553  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
6554  * @pf: board private structure
6555  * @port: The UDP port to look up
6556  *
6557  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
6558  **/
6559 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
6560 {
6561         u8 i;
6562
6563         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6564                 if (pf->vxlan_ports[i] == port)
6565                         return i;
6566         }
6567
6568         return i;
6569 }
6570
6571 /**
6572  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
6573  * @netdev: This physical port's netdev
6574  * @sa_family: Socket Family that VXLAN is notifying us about
6575  * @port: New UDP port number that VXLAN started listening to
6576  **/
6577 static void i40e_add_vxlan_port(struct net_device *netdev,
6578                                 sa_family_t sa_family, __be16 port)
6579 {
6580         struct i40e_netdev_priv *np = netdev_priv(netdev);
6581         struct i40e_vsi *vsi = np->vsi;
6582         struct i40e_pf *pf = vsi->back;
6583         u8 next_idx;
6584         u8 idx;
6585
6586         if (sa_family == AF_INET6)
6587                 return;
6588
6589         idx = i40e_get_vxlan_port_idx(pf, port);
6590
6591         /* Check if port already exists */
6592         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6593                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
6594                 return;
6595         }
6596
6597         /* Now check if there is space to add the new port */
6598         next_idx = i40e_get_vxlan_port_idx(pf, 0);
6599
6600         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6601                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
6602                             ntohs(port));
6603                 return;
6604         }
6605
6606         /* New port: add it and mark its index in the bitmap */
6607         pf->vxlan_ports[next_idx] = port;
6608         pf->pending_vxlan_bitmap |= (1 << next_idx);
6609
6610         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6611 }
6612
6613 /**
6614  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
6615  * @netdev: This physical port's netdev
6616  * @sa_family: Socket Family that VXLAN is notifying us about
6617  * @port: UDP port number that VXLAN stopped listening to
6618  **/
6619 static void i40e_del_vxlan_port(struct net_device *netdev,
6620                                 sa_family_t sa_family, __be16 port)
6621 {
6622         struct i40e_netdev_priv *np = netdev_priv(netdev);
6623         struct i40e_vsi *vsi = np->vsi;
6624         struct i40e_pf *pf = vsi->back;
6625         u8 idx;
6626
6627         if (sa_family == AF_INET6)
6628                 return;
6629
6630         idx = i40e_get_vxlan_port_idx(pf, port);
6631
6632         /* Check if port already exists */
6633         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6634                 /* if port exists, set it to 0 (mark for deletion)
6635                  * and make it pending
6636                  */
6637                 pf->vxlan_ports[idx] = 0;
6638
6639                 pf->pending_vxlan_bitmap |= (1 << idx);
6640
6641                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6642         } else {
6643                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
6644                             ntohs(port));
6645         }
6646 }
6647
6648 #endif
6649 #ifdef HAVE_FDB_OPS
6650 #ifdef USE_CONST_DEV_UC_CHAR
6651 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
6652                             struct net_device *dev,
6653                             const unsigned char *addr,
6654                             u16 flags)
6655 #else
6656 static int i40e_ndo_fdb_add(struct ndmsg *ndm,
6657                             struct net_device *dev,
6658                             unsigned char *addr,
6659                             u16 flags)
6660 #endif
6661 {
6662         struct i40e_netdev_priv *np = netdev_priv(dev);
6663         struct i40e_pf *pf = np->vsi->back;
6664         int err = 0;
6665
6666         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
6667                 return -EOPNOTSUPP;
6668
6669         /* Hardware does not support aging addresses so if a
6670          * ndm_state is given only allow permanent addresses
6671          */
6672         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
6673                 netdev_info(dev, "FDB only supports static addresses\n");
6674                 return -EINVAL;
6675         }
6676
6677         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
6678                 err = dev_uc_add_excl(dev, addr);
6679         else if (is_multicast_ether_addr(addr))
6680                 err = dev_mc_add_excl(dev, addr);
6681         else
6682                 err = -EINVAL;
6683
6684         /* Only return duplicate errors if NLM_F_EXCL is set */
6685         if (err == -EEXIST && !(flags & NLM_F_EXCL))
6686                 err = 0;
6687
6688         return err;
6689 }
6690
6691 #ifndef USE_DEFAULT_FDB_DEL_DUMP
6692 #ifdef USE_CONST_DEV_UC_CHAR
6693 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
6694                             struct net_device *dev,
6695                             const unsigned char *addr)
6696 #else
6697 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
6698                             struct net_device *dev,
6699                             unsigned char *addr)
6700 #endif
6701 {
6702         struct i40e_netdev_priv *np = netdev_priv(dev);
6703         struct i40e_pf *pf = np->vsi->back;
6704         int err = -EOPNOTSUPP;
6705
6706         if (ndm->ndm_state & NUD_PERMANENT) {
6707                 netdev_info(dev, "FDB only supports static addresses\n");
6708                 return -EINVAL;
6709         }
6710
6711         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
6712                 if (is_unicast_ether_addr(addr))
6713                         err = dev_uc_del(dev, addr);
6714                 else if (is_multicast_ether_addr(addr))
6715                         err = dev_mc_del(dev, addr);
6716                 else
6717                         err = -EINVAL;
6718         }
6719
6720         return err;
6721 }
6722
6723 static int i40e_ndo_fdb_dump(struct sk_buff *skb,
6724                              struct netlink_callback *cb,
6725                              struct net_device *dev,
6726                              int idx)
6727 {
6728         struct i40e_netdev_priv *np = netdev_priv(dev);
6729         struct i40e_pf *pf = np->vsi->back;
6730
6731         if (pf->flags & I40E_FLAG_SRIOV_ENABLED)
6732                 idx = ndo_dflt_fdb_dump(skb, cb, dev, idx);
6733
6734         return idx;
6735 }
6736
6737 #endif /* USE_DEFAULT_FDB_DEL_DUMP */
6738 #endif /* HAVE_FDB_OPS */
6739 static const struct net_device_ops i40e_netdev_ops = {
6740         .ndo_open               = i40e_open,
6741         .ndo_stop               = i40e_close,
6742         .ndo_start_xmit         = i40e_lan_xmit_frame,
6743         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
6744         .ndo_set_rx_mode        = i40e_set_rx_mode,
6745         .ndo_validate_addr      = eth_validate_addr,
6746         .ndo_set_mac_address    = i40e_set_mac,
6747         .ndo_change_mtu         = i40e_change_mtu,
6748         .ndo_do_ioctl           = i40e_ioctl,
6749         .ndo_tx_timeout         = i40e_tx_timeout,
6750         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
6751         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
6752 #ifdef CONFIG_NET_POLL_CONTROLLER
6753         .ndo_poll_controller    = i40e_netpoll,
6754 #endif
6755         .ndo_setup_tc           = i40e_setup_tc,
6756         .ndo_set_features       = i40e_set_features,
6757         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
6758         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
6759         .ndo_set_vf_tx_rate     = i40e_ndo_set_vf_bw,
6760         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
6761         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
6762 #ifdef CONFIG_I40E_VXLAN
6763         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
6764         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
6765 #endif
6766 #ifdef HAVE_FDB_OPS
6767         .ndo_fdb_add            = i40e_ndo_fdb_add,
6768 #ifndef USE_DEFAULT_FDB_DEL_DUMP
6769         .ndo_fdb_del            = i40e_ndo_fdb_del,
6770         .ndo_fdb_dump           = i40e_ndo_fdb_dump,
6771 #endif
6772 #endif
6773 };
6774
6775 /**
6776  * i40e_config_netdev - Setup the netdev flags
6777  * @vsi: the VSI being configured
6778  *
6779  * Returns 0 on success, negative value on failure
6780  **/
6781 static int i40e_config_netdev(struct i40e_vsi *vsi)
6782 {
6783         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
6784         struct i40e_pf *pf = vsi->back;
6785         struct i40e_hw *hw = &pf->hw;
6786         struct i40e_netdev_priv *np;
6787         struct net_device *netdev;
6788         u8 mac_addr[ETH_ALEN];
6789         int etherdev_size;
6790
6791         etherdev_size = sizeof(struct i40e_netdev_priv);
6792         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
6793         if (!netdev)
6794                 return -ENOMEM;
6795
6796         vsi->netdev = netdev;
6797         np = netdev_priv(netdev);
6798         np->vsi = vsi;
6799
6800         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
6801                                   NETIF_F_GSO_UDP_TUNNEL |
6802                                   NETIF_F_TSO;
6803
6804         netdev->features = NETIF_F_SG                  |
6805                            NETIF_F_IP_CSUM             |
6806                            NETIF_F_SCTP_CSUM           |
6807                            NETIF_F_HIGHDMA             |
6808                            NETIF_F_GSO_UDP_TUNNEL      |
6809                            NETIF_F_HW_VLAN_CTAG_TX     |
6810                            NETIF_F_HW_VLAN_CTAG_RX     |
6811                            NETIF_F_HW_VLAN_CTAG_FILTER |
6812                            NETIF_F_IPV6_CSUM           |
6813                            NETIF_F_TSO                 |
6814                            NETIF_F_TSO6                |
6815                            NETIF_F_RXCSUM              |
6816                            NETIF_F_NTUPLE              |
6817                            NETIF_F_RXHASH              |
6818                            0;
6819
6820         /* copy netdev features into list of user selectable features */
6821         netdev->hw_features |= netdev->features;
6822
6823         if (vsi->type == I40E_VSI_MAIN) {
6824                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
6825                 memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN);
6826         } else {
6827                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
6828                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
6829                          pf->vsi[pf->lan_vsi]->netdev->name);
6830                 random_ether_addr(mac_addr);
6831                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
6832         }
6833         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
6834
6835         memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
6836         memcpy(netdev->perm_addr, mac_addr, ETH_ALEN);
6837         /* vlan gets same features (except vlan offload)
6838          * after any tweaks for specific VSI types
6839          */
6840         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
6841                                                      NETIF_F_HW_VLAN_CTAG_RX |
6842                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
6843         netdev->priv_flags |= IFF_UNICAST_FLT;
6844         netdev->priv_flags |= IFF_SUPP_NOFCS;
6845         /* Setup netdev TC information */
6846         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
6847
6848         netdev->netdev_ops = &i40e_netdev_ops;
6849         netdev->watchdog_timeo = 5 * HZ;
6850         i40e_set_ethtool_ops(netdev);
6851
6852         return 0;
6853 }
6854
6855 /**
6856  * i40e_vsi_delete - Delete a VSI from the switch
6857  * @vsi: the VSI being removed
6858  *
6859  * Returns 0 on success, negative value on failure
6860  **/
6861 static void i40e_vsi_delete(struct i40e_vsi *vsi)
6862 {
6863         /* remove default VSI is not allowed */
6864         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
6865                 return;
6866
6867         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
6868         return;
6869 }
6870
6871 /**
6872  * i40e_add_vsi - Add a VSI to the switch
6873  * @vsi: the VSI being configured
6874  *
6875  * This initializes a VSI context depending on the VSI type to be added and
6876  * passes it down to the add_vsi aq command.
6877  **/
6878 static int i40e_add_vsi(struct i40e_vsi *vsi)
6879 {
6880         int ret = -ENODEV;
6881         struct i40e_mac_filter *f, *ftmp;
6882         struct i40e_pf *pf = vsi->back;
6883         struct i40e_hw *hw = &pf->hw;
6884         struct i40e_vsi_context ctxt;
6885         u8 enabled_tc = 0x1; /* TC0 enabled */
6886         int f_count = 0;
6887
6888         memset(&ctxt, 0, sizeof(ctxt));
6889         switch (vsi->type) {
6890         case I40E_VSI_MAIN:
6891                 /* The PF's main VSI is already setup as part of the
6892                  * device initialization, so we'll not bother with
6893                  * the add_vsi call, but we will retrieve the current
6894                  * VSI context.
6895                  */
6896                 ctxt.seid = pf->main_vsi_seid;
6897                 ctxt.pf_num = pf->hw.pf_id;
6898                 ctxt.vf_num = 0;
6899                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6900                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6901                 if (ret) {
6902                         dev_info(&pf->pdev->dev,
6903                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
6904                                  ret, pf->hw.aq.asq_last_status);
6905                         return -ENOENT;
6906                 }
6907                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
6908                 vsi->info.valid_sections = 0;
6909
6910                 vsi->seid = ctxt.seid;
6911                 vsi->id = ctxt.vsi_number;
6912
6913                 enabled_tc = i40e_pf_get_tc_map(pf);
6914
6915                 /* MFP mode setup queue map and update VSI */
6916                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
6917                         memset(&ctxt, 0, sizeof(ctxt));
6918                         ctxt.seid = pf->main_vsi_seid;
6919                         ctxt.pf_num = pf->hw.pf_id;
6920                         ctxt.vf_num = 0;
6921                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
6922                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
6923                         if (ret) {
6924                                 dev_info(&pf->pdev->dev,
6925                                          "update vsi failed, aq_err=%d\n",
6926                                          pf->hw.aq.asq_last_status);
6927                                 ret = -ENOENT;
6928                                 goto err;
6929                         }
6930                         /* update the local VSI info queue map */
6931                         i40e_vsi_update_queue_map(vsi, &ctxt);
6932                         vsi->info.valid_sections = 0;
6933                 } else {
6934                         /* Default/Main VSI is only enabled for TC0
6935                          * reconfigure it to enable all TCs that are
6936                          * available on the port in SFP mode.
6937                          */
6938                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
6939                         if (ret) {
6940                                 dev_info(&pf->pdev->dev,
6941                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
6942                                          enabled_tc, ret,
6943                                          pf->hw.aq.asq_last_status);
6944                                 ret = -ENOENT;
6945                         }
6946                 }
6947                 break;
6948
6949         case I40E_VSI_FDIR:
6950                 ctxt.pf_num = hw->pf_id;
6951                 ctxt.vf_num = 0;
6952                 ctxt.uplink_seid = vsi->uplink_seid;
6953                 ctxt.connection_type = 0x1;     /* regular data port */
6954                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6955                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6956                 break;
6957
6958         case I40E_VSI_VMDQ2:
6959                 ctxt.pf_num = hw->pf_id;
6960                 ctxt.vf_num = 0;
6961                 ctxt.uplink_seid = vsi->uplink_seid;
6962                 ctxt.connection_type = 0x1;     /* regular data port */
6963                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
6964
6965                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6966
6967                 /* This VSI is connected to VEB so the switch_id
6968                  * should be set to zero by default.
6969                  */
6970                 ctxt.info.switch_id = 0;
6971                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
6972                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6973
6974                 /* Setup the VSI tx/rx queue map for TC0 only for now */
6975                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6976                 break;
6977
6978         case I40E_VSI_SRIOV:
6979                 ctxt.pf_num = hw->pf_id;
6980                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
6981                 ctxt.uplink_seid = vsi->uplink_seid;
6982                 ctxt.connection_type = 0x1;     /* regular data port */
6983                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
6984
6985                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6986
6987                 /* This VSI is connected to VEB so the switch_id
6988                  * should be set to zero by default.
6989                  */
6990                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6991
6992                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
6993                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
6994                 /* Setup the VSI tx/rx queue map for TC0 only for now */
6995                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6996                 break;
6997
6998         default:
6999                 return -ENODEV;
7000         }
7001
7002         if (vsi->type != I40E_VSI_MAIN) {
7003                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
7004                 if (ret) {
7005                         dev_info(&vsi->back->pdev->dev,
7006                                  "add vsi failed, aq_err=%d\n",
7007                                  vsi->back->hw.aq.asq_last_status);
7008                         ret = -ENOENT;
7009                         goto err;
7010                 }
7011                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7012                 vsi->info.valid_sections = 0;
7013                 vsi->seid = ctxt.seid;
7014                 vsi->id = ctxt.vsi_number;
7015         }
7016
7017         /* If macvlan filters already exist, force them to get loaded */
7018         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
7019                 f->changed = true;
7020                 f_count++;
7021         }
7022         if (f_count) {
7023                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
7024                 pf->flags |= I40E_FLAG_FILTER_SYNC;
7025         }
7026
7027         /* Update VSI BW information */
7028         ret = i40e_vsi_get_bw_info(vsi);
7029         if (ret) {
7030                 dev_info(&pf->pdev->dev,
7031                          "couldn't get vsi bw info, err %d, aq_err %d\n",
7032                          ret, pf->hw.aq.asq_last_status);
7033                 /* VSI is already added so not tearing that up */
7034                 ret = 0;
7035         }
7036
7037 err:
7038         return ret;
7039 }
7040
7041 /**
7042  * i40e_vsi_release - Delete a VSI and free its resources
7043  * @vsi: the VSI being removed
7044  *
7045  * Returns 0 on success or < 0 on error
7046  **/
7047 int i40e_vsi_release(struct i40e_vsi *vsi)
7048 {
7049         struct i40e_mac_filter *f, *ftmp;
7050         struct i40e_veb *veb = NULL;
7051         struct i40e_pf *pf;
7052         u16 uplink_seid;
7053         int i, n;
7054
7055         pf = vsi->back;
7056
7057         /* release of a VEB-owner or last VSI is not allowed */
7058         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
7059                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
7060                          vsi->seid, vsi->uplink_seid);
7061                 return -ENODEV;
7062         }
7063         if (vsi == pf->vsi[pf->lan_vsi] &&
7064             !test_bit(__I40E_DOWN, &pf->state)) {
7065                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
7066                 return -ENODEV;
7067         }
7068
7069         uplink_seid = vsi->uplink_seid;
7070         if (vsi->type != I40E_VSI_SRIOV) {
7071                 if (vsi->netdev_registered) {
7072                         vsi->netdev_registered = false;
7073                         if (vsi->netdev) {
7074                                 /* results in a call to i40e_close() */
7075                                 unregister_netdev(vsi->netdev);
7076                         }
7077                 } else {
7078                         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
7079                                 i40e_down(vsi);
7080                         i40e_vsi_free_irq(vsi);
7081                         i40e_vsi_free_tx_resources(vsi);
7082                         i40e_vsi_free_rx_resources(vsi);
7083                 }
7084                 i40e_vsi_disable_irq(vsi);
7085         }
7086
7087         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
7088                 i40e_del_filter(vsi, f->macaddr, f->vlan,
7089                                 f->is_vf, f->is_netdev);
7090         i40e_sync_vsi_filters(vsi);
7091
7092         i40e_vsi_delete(vsi);
7093         i40e_vsi_free_q_vectors(vsi);
7094         if (vsi->netdev) {
7095                 free_netdev(vsi->netdev);
7096                 vsi->netdev = NULL;
7097         }
7098         i40e_vsi_clear_rings(vsi);
7099         i40e_vsi_clear(vsi);
7100
7101         /* If this was the last thing on the VEB, except for the
7102          * controlling VSI, remove the VEB, which puts the controlling
7103          * VSI onto the next level down in the switch.
7104          *
7105          * Well, okay, there's one more exception here: don't remove
7106          * the orphan VEBs yet.  We'll wait for an explicit remove request
7107          * from up the network stack.
7108          */
7109         for (n = 0, i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7110                 if (pf->vsi[i] &&
7111                     pf->vsi[i]->uplink_seid == uplink_seid &&
7112                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7113                         n++;      /* count the VSIs */
7114                 }
7115         }
7116         for (i = 0; i < I40E_MAX_VEB; i++) {
7117                 if (!pf->veb[i])
7118                         continue;
7119                 if (pf->veb[i]->uplink_seid == uplink_seid)
7120                         n++;     /* count the VEBs */
7121                 if (pf->veb[i]->seid == uplink_seid)
7122                         veb = pf->veb[i];
7123         }
7124         if (n == 0 && veb && veb->uplink_seid != 0)
7125                 i40e_veb_release(veb);
7126
7127         return 0;
7128 }
7129
7130 /**
7131  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
7132  * @vsi: ptr to the VSI
7133  *
7134  * This should only be called after i40e_vsi_mem_alloc() which allocates the
7135  * corresponding SW VSI structure and initializes num_queue_pairs for the
7136  * newly allocated VSI.
7137  *
7138  * Returns 0 on success or negative on failure
7139  **/
7140 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
7141 {
7142         int ret = -ENOENT;
7143         struct i40e_pf *pf = vsi->back;
7144
7145         if (vsi->q_vectors[0]) {
7146                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
7147                          vsi->seid);
7148                 return -EEXIST;
7149         }
7150
7151         if (vsi->base_vector) {
7152                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
7153                          vsi->seid, vsi->base_vector);
7154                 return -EEXIST;
7155         }
7156
7157         ret = i40e_vsi_alloc_q_vectors(vsi);
7158         if (ret) {
7159                 dev_info(&pf->pdev->dev,
7160                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
7161                          vsi->num_q_vectors, vsi->seid, ret);
7162                 vsi->num_q_vectors = 0;
7163                 goto vector_setup_out;
7164         }
7165
7166         if (vsi->num_q_vectors)
7167                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
7168                                                  vsi->num_q_vectors, vsi->idx);
7169         if (vsi->base_vector < 0) {
7170                 dev_info(&pf->pdev->dev,
7171                          "failed to get queue tracking for VSI %d, err=%d\n",
7172                          vsi->seid, vsi->base_vector);
7173                 i40e_vsi_free_q_vectors(vsi);
7174                 ret = -ENOENT;
7175                 goto vector_setup_out;
7176         }
7177
7178 vector_setup_out:
7179         return ret;
7180 }
7181
7182 /**
7183  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
7184  * @vsi: pointer to the vsi.
7185  *
7186  * This re-allocates a vsi's queue resources.
7187  *
7188  * Returns pointer to the successfully allocated and configured VSI sw struct
7189  * on success, otherwise returns NULL on failure.
7190  **/
7191 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
7192 {
7193         struct i40e_pf *pf = vsi->back;
7194         u8 enabled_tc;
7195         int ret;
7196
7197         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7198         i40e_vsi_clear_rings(vsi);
7199
7200         i40e_vsi_free_arrays(vsi, false);
7201         i40e_set_num_rings_in_vsi(vsi);
7202         ret = i40e_vsi_alloc_arrays(vsi, false);
7203         if (ret)
7204                 goto err_vsi;
7205
7206         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
7207         if (ret < 0) {
7208                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7209                          vsi->seid, ret);
7210                 goto err_vsi;
7211         }
7212         vsi->base_queue = ret;
7213
7214         /* Update the FW view of the VSI. Force a reset of TC and queue
7215          * layout configurations.
7216          */
7217         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7218         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7219         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7220         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7221
7222         /* assign it some queues */
7223         ret = i40e_alloc_rings(vsi);
7224         if (ret)
7225                 goto err_rings;
7226
7227         /* map all of the rings to the q_vectors */
7228         i40e_vsi_map_rings_to_vectors(vsi);
7229         return vsi;
7230
7231 err_rings:
7232         i40e_vsi_free_q_vectors(vsi);
7233         if (vsi->netdev_registered) {
7234                 vsi->netdev_registered = false;
7235                 unregister_netdev(vsi->netdev);
7236                 free_netdev(vsi->netdev);
7237                 vsi->netdev = NULL;
7238         }
7239         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7240 err_vsi:
7241         i40e_vsi_clear(vsi);
7242         return NULL;
7243 }
7244
7245 /**
7246  * i40e_vsi_setup - Set up a VSI by a given type
7247  * @pf: board private structure
7248  * @type: VSI type
7249  * @uplink_seid: the switch element to link to
7250  * @param1: usage depends upon VSI type. For VF types, indicates VF id
7251  *
7252  * This allocates the sw VSI structure and its queue resources, then add a VSI
7253  * to the identified VEB.
7254  *
7255  * Returns pointer to the successfully allocated and configure VSI sw struct on
7256  * success, otherwise returns NULL on failure.
7257  **/
7258 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
7259                                 u16 uplink_seid, u32 param1)
7260 {
7261         struct i40e_vsi *vsi = NULL;
7262         struct i40e_veb *veb = NULL;
7263         int ret, i;
7264         int v_idx;
7265
7266         /* The requested uplink_seid must be either
7267          *     - the PF's port seid
7268          *              no VEB is needed because this is the PF
7269          *              or this is a Flow Director special case VSI
7270          *     - seid of an existing VEB
7271          *     - seid of a VSI that owns an existing VEB
7272          *     - seid of a VSI that doesn't own a VEB
7273          *              a new VEB is created and the VSI becomes the owner
7274          *     - seid of the PF VSI, which is what creates the first VEB
7275          *              this is a special case of the previous
7276          *
7277          * Find which uplink_seid we were given and create a new VEB if needed
7278          */
7279         for (i = 0; i < I40E_MAX_VEB; i++) {
7280                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
7281                         veb = pf->veb[i];
7282                         break;
7283                 }
7284         }
7285
7286         if (!veb && uplink_seid != pf->mac_seid) {
7287
7288                 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7289                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
7290                                 vsi = pf->vsi[i];
7291                                 break;
7292                         }
7293                 }
7294                 if (!vsi) {
7295                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
7296                                  uplink_seid);
7297                         return NULL;
7298                 }
7299
7300                 if (vsi->uplink_seid == pf->mac_seid)
7301                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
7302                                              vsi->tc_config.enabled_tc);
7303                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
7304                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
7305                                              vsi->tc_config.enabled_tc);
7306
7307                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7308                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7309                                 veb = pf->veb[i];
7310                 }
7311                 if (!veb) {
7312                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
7313                         return NULL;
7314                 }
7315
7316                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7317                 uplink_seid = veb->seid;
7318         }
7319
7320         /* get vsi sw struct */
7321         v_idx = i40e_vsi_mem_alloc(pf, type);
7322         if (v_idx < 0)
7323                 goto err_alloc;
7324         vsi = pf->vsi[v_idx];
7325         if (!vsi)
7326                 goto err_alloc;
7327         vsi->type = type;
7328         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
7329
7330         if (type == I40E_VSI_MAIN)
7331                 pf->lan_vsi = v_idx;
7332         else if (type == I40E_VSI_SRIOV)
7333                 vsi->vf_id = param1;
7334         /* assign it some queues */
7335         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
7336                                 vsi->idx);
7337         if (ret < 0) {
7338                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7339                          vsi->seid, ret);
7340                 goto err_vsi;
7341         }
7342         vsi->base_queue = ret;
7343
7344         /* get a VSI from the hardware */
7345         vsi->uplink_seid = uplink_seid;
7346         ret = i40e_add_vsi(vsi);
7347         if (ret)
7348                 goto err_vsi;
7349
7350         switch (vsi->type) {
7351         /* setup the netdev if needed */
7352         case I40E_VSI_MAIN:
7353         case I40E_VSI_VMDQ2:
7354                 ret = i40e_config_netdev(vsi);
7355                 if (ret)
7356                         goto err_netdev;
7357                 ret = register_netdev(vsi->netdev);
7358                 if (ret)
7359                         goto err_netdev;
7360                 vsi->netdev_registered = true;
7361                 netif_carrier_off(vsi->netdev);
7362 #ifdef CONFIG_I40E_DCB
7363                 /* Setup DCB netlink interface */
7364                 i40e_dcbnl_setup(vsi);
7365 #endif /* CONFIG_I40E_DCB */
7366                 /* fall through */
7367
7368         case I40E_VSI_FDIR:
7369                 /* set up vectors and rings if needed */
7370                 ret = i40e_vsi_setup_vectors(vsi);
7371                 if (ret)
7372                         goto err_msix;
7373
7374                 ret = i40e_alloc_rings(vsi);
7375                 if (ret)
7376                         goto err_rings;
7377
7378                 /* map all of the rings to the q_vectors */
7379                 i40e_vsi_map_rings_to_vectors(vsi);
7380
7381                 i40e_vsi_reset_stats(vsi);
7382                 break;
7383
7384         default:
7385                 /* no netdev or rings for the other VSI types */
7386                 break;
7387         }
7388
7389         return vsi;
7390
7391 err_rings:
7392         i40e_vsi_free_q_vectors(vsi);
7393 err_msix:
7394         if (vsi->netdev_registered) {
7395                 vsi->netdev_registered = false;
7396                 unregister_netdev(vsi->netdev);
7397                 free_netdev(vsi->netdev);
7398                 vsi->netdev = NULL;
7399         }
7400 err_netdev:
7401         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7402 err_vsi:
7403         i40e_vsi_clear(vsi);
7404 err_alloc:
7405         return NULL;
7406 }
7407
7408 /**
7409  * i40e_veb_get_bw_info - Query VEB BW information
7410  * @veb: the veb to query
7411  *
7412  * Query the Tx scheduler BW configuration data for given VEB
7413  **/
7414 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
7415 {
7416         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
7417         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
7418         struct i40e_pf *pf = veb->pf;
7419         struct i40e_hw *hw = &pf->hw;
7420         u32 tc_bw_max;
7421         int ret = 0;
7422         int i;
7423
7424         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
7425                                                   &bw_data, NULL);
7426         if (ret) {
7427                 dev_info(&pf->pdev->dev,
7428                          "query veb bw config failed, aq_err=%d\n",
7429                          hw->aq.asq_last_status);
7430                 goto out;
7431         }
7432
7433         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
7434                                                    &ets_data, NULL);
7435         if (ret) {
7436                 dev_info(&pf->pdev->dev,
7437                          "query veb bw ets config failed, aq_err=%d\n",
7438                          hw->aq.asq_last_status);
7439                 goto out;
7440         }
7441
7442         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
7443         veb->bw_max_quanta = ets_data.tc_bw_max;
7444         veb->is_abs_credits = bw_data.absolute_credits_enable;
7445         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
7446                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
7447         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
7448                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
7449                 veb->bw_tc_limit_credits[i] =
7450                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
7451                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
7452         }
7453
7454 out:
7455         return ret;
7456 }
7457
7458 /**
7459  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
7460  * @pf: board private structure
7461  *
7462  * On error: returns error code (negative)
7463  * On success: returns vsi index in PF (positive)
7464  **/
7465 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
7466 {
7467         int ret = -ENOENT;
7468         struct i40e_veb *veb;
7469         int i;
7470
7471         /* Need to protect the allocation of switch elements at the PF level */
7472         mutex_lock(&pf->switch_mutex);
7473
7474         /* VEB list may be fragmented if VEB creation/destruction has
7475          * been happening.  We can afford to do a quick scan to look
7476          * for any free slots in the list.
7477          *
7478          * find next empty veb slot, looping back around if necessary
7479          */
7480         i = 0;
7481         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
7482                 i++;
7483         if (i >= I40E_MAX_VEB) {
7484                 ret = -ENOMEM;
7485                 goto err_alloc_veb;  /* out of VEB slots! */
7486         }
7487
7488         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
7489         if (!veb) {
7490                 ret = -ENOMEM;
7491                 goto err_alloc_veb;
7492         }
7493         veb->pf = pf;
7494         veb->idx = i;
7495         veb->enabled_tc = 1;
7496
7497         pf->veb[i] = veb;
7498         ret = i;
7499 err_alloc_veb:
7500         mutex_unlock(&pf->switch_mutex);
7501         return ret;
7502 }
7503
7504 /**
7505  * i40e_switch_branch_release - Delete a branch of the switch tree
7506  * @branch: where to start deleting
7507  *
7508  * This uses recursion to find the tips of the branch to be
7509  * removed, deleting until we get back to and can delete this VEB.
7510  **/
7511 static void i40e_switch_branch_release(struct i40e_veb *branch)
7512 {
7513         struct i40e_pf *pf = branch->pf;
7514         u16 branch_seid = branch->seid;
7515         u16 veb_idx = branch->idx;
7516         int i;
7517
7518         /* release any VEBs on this VEB - RECURSION */
7519         for (i = 0; i < I40E_MAX_VEB; i++) {
7520                 if (!pf->veb[i])
7521                         continue;
7522                 if (pf->veb[i]->uplink_seid == branch->seid)
7523                         i40e_switch_branch_release(pf->veb[i]);
7524         }
7525
7526         /* Release the VSIs on this VEB, but not the owner VSI.
7527          *
7528          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
7529          *       the VEB itself, so don't use (*branch) after this loop.
7530          */
7531         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7532                 if (!pf->vsi[i])
7533                         continue;
7534                 if (pf->vsi[i]->uplink_seid == branch_seid &&
7535                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7536                         i40e_vsi_release(pf->vsi[i]);
7537                 }
7538         }
7539
7540         /* There's one corner case where the VEB might not have been
7541          * removed, so double check it here and remove it if needed.
7542          * This case happens if the veb was created from the debugfs
7543          * commands and no VSIs were added to it.
7544          */
7545         if (pf->veb[veb_idx])
7546                 i40e_veb_release(pf->veb[veb_idx]);
7547 }
7548
7549 /**
7550  * i40e_veb_clear - remove veb struct
7551  * @veb: the veb to remove
7552  **/
7553 static void i40e_veb_clear(struct i40e_veb *veb)
7554 {
7555         if (!veb)
7556                 return;
7557
7558         if (veb->pf) {
7559                 struct i40e_pf *pf = veb->pf;
7560
7561                 mutex_lock(&pf->switch_mutex);
7562                 if (pf->veb[veb->idx] == veb)
7563                         pf->veb[veb->idx] = NULL;
7564                 mutex_unlock(&pf->switch_mutex);
7565         }
7566
7567         kfree(veb);
7568 }
7569
7570 /**
7571  * i40e_veb_release - Delete a VEB and free its resources
7572  * @veb: the VEB being removed
7573  **/
7574 void i40e_veb_release(struct i40e_veb *veb)
7575 {
7576         struct i40e_vsi *vsi = NULL;
7577         struct i40e_pf *pf;
7578         int i, n = 0;
7579
7580         pf = veb->pf;
7581
7582         /* find the remaining VSI and check for extras */
7583         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7584                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
7585                         n++;
7586                         vsi = pf->vsi[i];
7587                 }
7588         }
7589         if (n != 1) {
7590                 dev_info(&pf->pdev->dev,
7591                          "can't remove VEB %d with %d VSIs left\n",
7592                          veb->seid, n);
7593                 return;
7594         }
7595
7596         /* move the remaining VSI to uplink veb */
7597         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
7598         if (veb->uplink_seid) {
7599                 vsi->uplink_seid = veb->uplink_seid;
7600                 if (veb->uplink_seid == pf->mac_seid)
7601                         vsi->veb_idx = I40E_NO_VEB;
7602                 else
7603                         vsi->veb_idx = veb->veb_idx;
7604         } else {
7605                 /* floating VEB */
7606                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
7607                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
7608         }
7609
7610         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
7611         i40e_veb_clear(veb);
7612
7613         return;
7614 }
7615
7616 /**
7617  * i40e_add_veb - create the VEB in the switch
7618  * @veb: the VEB to be instantiated
7619  * @vsi: the controlling VSI
7620  **/
7621 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
7622 {
7623         bool is_default = false;
7624         bool is_cloud = false;
7625         int ret;
7626
7627         /* get a VEB from the hardware */
7628         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
7629                               veb->enabled_tc, is_default,
7630                               is_cloud, &veb->seid, NULL);
7631         if (ret) {
7632                 dev_info(&veb->pf->pdev->dev,
7633                          "couldn't add VEB, err %d, aq_err %d\n",
7634                          ret, veb->pf->hw.aq.asq_last_status);
7635                 return -EPERM;
7636         }
7637
7638         /* get statistics counter */
7639         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
7640                                          &veb->stats_idx, NULL, NULL, NULL);
7641         if (ret) {
7642                 dev_info(&veb->pf->pdev->dev,
7643                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
7644                          ret, veb->pf->hw.aq.asq_last_status);
7645                 return -EPERM;
7646         }
7647         ret = i40e_veb_get_bw_info(veb);
7648         if (ret) {
7649                 dev_info(&veb->pf->pdev->dev,
7650                          "couldn't get VEB bw info, err %d, aq_err %d\n",
7651                          ret, veb->pf->hw.aq.asq_last_status);
7652                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
7653                 return -ENOENT;
7654         }
7655
7656         vsi->uplink_seid = veb->seid;
7657         vsi->veb_idx = veb->idx;
7658         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7659
7660         return 0;
7661 }
7662
7663 /**
7664  * i40e_veb_setup - Set up a VEB
7665  * @pf: board private structure
7666  * @flags: VEB setup flags
7667  * @uplink_seid: the switch element to link to
7668  * @vsi_seid: the initial VSI seid
7669  * @enabled_tc: Enabled TC bit-map
7670  *
7671  * This allocates the sw VEB structure and links it into the switch
7672  * It is possible and legal for this to be a duplicate of an already
7673  * existing VEB.  It is also possible for both uplink and vsi seids
7674  * to be zero, in order to create a floating VEB.
7675  *
7676  * Returns pointer to the successfully allocated VEB sw struct on
7677  * success, otherwise returns NULL on failure.
7678  **/
7679 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
7680                                 u16 uplink_seid, u16 vsi_seid,
7681                                 u8 enabled_tc)
7682 {
7683         struct i40e_veb *veb, *uplink_veb = NULL;
7684         int vsi_idx, veb_idx;
7685         int ret;
7686
7687         /* if one seid is 0, the other must be 0 to create a floating relay */
7688         if ((uplink_seid == 0 || vsi_seid == 0) &&
7689             (uplink_seid + vsi_seid != 0)) {
7690                 dev_info(&pf->pdev->dev,
7691                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
7692                          uplink_seid, vsi_seid);
7693                 return NULL;
7694         }
7695
7696         /* make sure there is such a vsi and uplink */
7697         for (vsi_idx = 0; vsi_idx < pf->hw.func_caps.num_vsis; vsi_idx++)
7698                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
7699                         break;
7700         if (vsi_idx >= pf->hw.func_caps.num_vsis && vsi_seid != 0) {
7701                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
7702                          vsi_seid);
7703                 return NULL;
7704         }
7705
7706         if (uplink_seid && uplink_seid != pf->mac_seid) {
7707                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
7708                         if (pf->veb[veb_idx] &&
7709                             pf->veb[veb_idx]->seid == uplink_seid) {
7710                                 uplink_veb = pf->veb[veb_idx];
7711                                 break;
7712                         }
7713                 }
7714                 if (!uplink_veb) {
7715                         dev_info(&pf->pdev->dev,
7716                                  "uplink seid %d not found\n", uplink_seid);
7717                         return NULL;
7718                 }
7719         }
7720
7721         /* get veb sw struct */
7722         veb_idx = i40e_veb_mem_alloc(pf);
7723         if (veb_idx < 0)
7724                 goto err_alloc;
7725         veb = pf->veb[veb_idx];
7726         veb->flags = flags;
7727         veb->uplink_seid = uplink_seid;
7728         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
7729         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
7730
7731         /* create the VEB in the switch */
7732         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
7733         if (ret)
7734                 goto err_veb;
7735
7736         return veb;
7737
7738 err_veb:
7739         i40e_veb_clear(veb);
7740 err_alloc:
7741         return NULL;
7742 }
7743
7744 /**
7745  * i40e_setup_pf_switch_element - set pf vars based on switch type
7746  * @pf: board private structure
7747  * @ele: element we are building info from
7748  * @num_reported: total number of elements
7749  * @printconfig: should we print the contents
7750  *
7751  * helper function to assist in extracting a few useful SEID values.
7752  **/
7753 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
7754                                 struct i40e_aqc_switch_config_element_resp *ele,
7755                                 u16 num_reported, bool printconfig)
7756 {
7757         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
7758         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
7759         u8 element_type = ele->element_type;
7760         u16 seid = le16_to_cpu(ele->seid);
7761
7762         if (printconfig)
7763                 dev_info(&pf->pdev->dev,
7764                          "type=%d seid=%d uplink=%d downlink=%d\n",
7765                          element_type, seid, uplink_seid, downlink_seid);
7766
7767         switch (element_type) {
7768         case I40E_SWITCH_ELEMENT_TYPE_MAC:
7769                 pf->mac_seid = seid;
7770                 break;
7771         case I40E_SWITCH_ELEMENT_TYPE_VEB:
7772                 /* Main VEB? */
7773                 if (uplink_seid != pf->mac_seid)
7774                         break;
7775                 if (pf->lan_veb == I40E_NO_VEB) {
7776                         int v;
7777
7778                         /* find existing or else empty VEB */
7779                         for (v = 0; v < I40E_MAX_VEB; v++) {
7780                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
7781                                         pf->lan_veb = v;
7782                                         break;
7783                                 }
7784                         }
7785                         if (pf->lan_veb == I40E_NO_VEB) {
7786                                 v = i40e_veb_mem_alloc(pf);
7787                                 if (v < 0)
7788                                         break;
7789                                 pf->lan_veb = v;
7790                         }
7791                 }
7792
7793                 pf->veb[pf->lan_veb]->seid = seid;
7794                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
7795                 pf->veb[pf->lan_veb]->pf = pf;
7796                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
7797                 break;
7798         case I40E_SWITCH_ELEMENT_TYPE_VSI:
7799                 if (num_reported != 1)
7800                         break;
7801                 /* This is immediately after a reset so we can assume this is
7802                  * the PF's VSI
7803                  */
7804                 pf->mac_seid = uplink_seid;
7805                 pf->pf_seid = downlink_seid;
7806                 pf->main_vsi_seid = seid;
7807                 if (printconfig)
7808                         dev_info(&pf->pdev->dev,
7809                                  "pf_seid=%d main_vsi_seid=%d\n",
7810                                  pf->pf_seid, pf->main_vsi_seid);
7811                 break;
7812         case I40E_SWITCH_ELEMENT_TYPE_PF:
7813         case I40E_SWITCH_ELEMENT_TYPE_VF:
7814         case I40E_SWITCH_ELEMENT_TYPE_EMP:
7815         case I40E_SWITCH_ELEMENT_TYPE_BMC:
7816         case I40E_SWITCH_ELEMENT_TYPE_PE:
7817         case I40E_SWITCH_ELEMENT_TYPE_PA:
7818                 /* ignore these for now */
7819                 break;
7820         default:
7821                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
7822                          element_type, seid);
7823                 break;
7824         }
7825 }
7826
7827 /**
7828  * i40e_fetch_switch_configuration - Get switch config from firmware
7829  * @pf: board private structure
7830  * @printconfig: should we print the contents
7831  *
7832  * Get the current switch configuration from the device and
7833  * extract a few useful SEID values.
7834  **/
7835 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
7836 {
7837         struct i40e_aqc_get_switch_config_resp *sw_config;
7838         u16 next_seid = 0;
7839         int ret = 0;
7840         u8 *aq_buf;
7841         int i;
7842
7843         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
7844         if (!aq_buf)
7845                 return -ENOMEM;
7846
7847         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
7848         do {
7849                 u16 num_reported, num_total;
7850
7851                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
7852                                                 I40E_AQ_LARGE_BUF,
7853                                                 &next_seid, NULL);
7854                 if (ret) {
7855                         dev_info(&pf->pdev->dev,
7856                                  "get switch config failed %d aq_err=%x\n",
7857                                  ret, pf->hw.aq.asq_last_status);
7858                         kfree(aq_buf);
7859                         return -ENOENT;
7860                 }
7861
7862                 num_reported = le16_to_cpu(sw_config->header.num_reported);
7863                 num_total = le16_to_cpu(sw_config->header.num_total);
7864
7865                 if (printconfig)
7866                         dev_info(&pf->pdev->dev,
7867                                  "header: %d reported %d total\n",
7868                                  num_reported, num_total);
7869
7870                 if (num_reported) {
7871                         int sz = sizeof(*sw_config) * num_reported;
7872
7873                         kfree(pf->sw_config);
7874                         pf->sw_config = kzalloc(sz, GFP_KERNEL);
7875                         if (pf->sw_config)
7876                                 memcpy(pf->sw_config, sw_config, sz);
7877                 }
7878
7879                 for (i = 0; i < num_reported; i++) {
7880                         struct i40e_aqc_switch_config_element_resp *ele =
7881                                 &sw_config->element[i];
7882
7883                         i40e_setup_pf_switch_element(pf, ele, num_reported,
7884                                                      printconfig);
7885                 }
7886         } while (next_seid != 0);
7887
7888         kfree(aq_buf);
7889         return ret;
7890 }
7891
7892 /**
7893  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
7894  * @pf: board private structure
7895  * @reinit: if the Main VSI needs to re-initialized.
7896  *
7897  * Returns 0 on success, negative value on failure
7898  **/
7899 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
7900 {
7901         u32 rxfc = 0, txfc = 0, rxfc_reg;
7902         int ret;
7903
7904         /* find out what's out there already */
7905         ret = i40e_fetch_switch_configuration(pf, false);
7906         if (ret) {
7907                 dev_info(&pf->pdev->dev,
7908                          "couldn't fetch switch config, err %d, aq_err %d\n",
7909                          ret, pf->hw.aq.asq_last_status);
7910                 return ret;
7911         }
7912         i40e_pf_reset_stats(pf);
7913
7914         /* first time setup */
7915         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
7916                 struct i40e_vsi *vsi = NULL;
7917                 u16 uplink_seid;
7918
7919                 /* Set up the PF VSI associated with the PF's main VSI
7920                  * that is already in the HW switch
7921                  */
7922                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
7923                         uplink_seid = pf->veb[pf->lan_veb]->seid;
7924                 else
7925                         uplink_seid = pf->mac_seid;
7926                 if (pf->lan_vsi == I40E_NO_VSI)
7927                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
7928                 else if (reinit)
7929                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
7930                 if (!vsi) {
7931                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
7932                         i40e_fdir_teardown(pf);
7933                         return -EAGAIN;
7934                 }
7935         } else {
7936                 /* force a reset of TC and queue layout configurations */
7937                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7938                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7939                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7940                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7941         }
7942         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
7943
7944         i40e_fdir_sb_setup(pf);
7945
7946         /* Setup static PF queue filter control settings */
7947         ret = i40e_setup_pf_filter_control(pf);
7948         if (ret) {
7949                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
7950                          ret);
7951                 /* Failure here should not stop continuing other steps */
7952         }
7953
7954         /* enable RSS in the HW, even for only one queue, as the stack can use
7955          * the hash
7956          */
7957         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
7958                 i40e_config_rss(pf);
7959
7960         /* fill in link information and enable LSE reporting */
7961         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
7962         i40e_link_event(pf);
7963
7964         /* Initialize user-specific link properties */
7965         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
7966                                   I40E_AQ_AN_COMPLETED) ? true : false);
7967         /* requested_mode is set in probe or by ethtool */
7968         if (!pf->fc_autoneg_status)
7969                 goto no_autoneg;
7970
7971         if ((pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX) &&
7972             (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX))
7973                 pf->hw.fc.current_mode = I40E_FC_FULL;
7974         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
7975                 pf->hw.fc.current_mode = I40E_FC_TX_PAUSE;
7976         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
7977                 pf->hw.fc.current_mode = I40E_FC_RX_PAUSE;
7978         else
7979                 pf->hw.fc.current_mode = I40E_FC_NONE;
7980
7981         /* sync the flow control settings with the auto-neg values */
7982         switch (pf->hw.fc.current_mode) {
7983         case I40E_FC_FULL:
7984                 txfc = 1;
7985                 rxfc = 1;
7986                 break;
7987         case I40E_FC_TX_PAUSE:
7988                 txfc = 1;
7989                 rxfc = 0;
7990                 break;
7991         case I40E_FC_RX_PAUSE:
7992                 txfc = 0;
7993                 rxfc = 1;
7994                 break;
7995         case I40E_FC_NONE:
7996         case I40E_FC_DEFAULT:
7997                 txfc = 0;
7998                 rxfc = 0;
7999                 break;
8000         case I40E_FC_PFC:
8001                 /* TBD */
8002                 break;
8003         /* no default case, we have to handle all possibilities here */
8004         }
8005
8006         wr32(&pf->hw, I40E_PRTDCB_FCCFG, txfc << I40E_PRTDCB_FCCFG_TFCE_SHIFT);
8007
8008         rxfc_reg = rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
8009                    ~I40E_PRTDCB_MFLCN_RFCE_MASK;
8010         rxfc_reg |= (rxfc << I40E_PRTDCB_MFLCN_RFCE_SHIFT);
8011
8012         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rxfc_reg);
8013
8014         goto fc_complete;
8015
8016 no_autoneg:
8017         /* disable L2 flow control, user can turn it on if they wish */
8018         wr32(&pf->hw, I40E_PRTDCB_FCCFG, 0);
8019         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
8020                                          ~I40E_PRTDCB_MFLCN_RFCE_MASK);
8021
8022 fc_complete:
8023         i40e_ptp_init(pf);
8024
8025         return ret;
8026 }
8027
8028 /**
8029  * i40e_determine_queue_usage - Work out queue distribution
8030  * @pf: board private structure
8031  **/
8032 static void i40e_determine_queue_usage(struct i40e_pf *pf)
8033 {
8034         int queues_left;
8035
8036         pf->num_lan_qps = 0;
8037
8038         /* Find the max queues to be put into basic use.  We'll always be
8039          * using TC0, whether or not DCB is running, and TC0 will get the
8040          * big RSS set.
8041          */
8042         queues_left = pf->hw.func_caps.num_tx_qp;
8043
8044         if ((queues_left == 1) ||
8045             !(pf->flags & I40E_FLAG_MSIX_ENABLED) ||
8046             !(pf->flags & (I40E_FLAG_RSS_ENABLED | I40E_FLAG_FD_SB_ENABLED |
8047                            I40E_FLAG_DCB_ENABLED))) {
8048                 /* one qp for PF, no queues for anything else */
8049                 queues_left = 0;
8050                 pf->rss_size = pf->num_lan_qps = 1;
8051
8052                 /* make sure all the fancies are disabled */
8053                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8054                                I40E_FLAG_FD_SB_ENABLED  |
8055                                I40E_FLAG_FD_ATR_ENABLED |
8056                                I40E_FLAG_DCB_ENABLED    |
8057                                I40E_FLAG_SRIOV_ENABLED  |
8058                                I40E_FLAG_VMDQ_ENABLED);
8059         } else {
8060                 /* Not enough queues for all TCs */
8061                 if ((pf->flags & I40E_FLAG_DCB_ENABLED) &&
8062                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8063                         pf->flags &= ~I40E_FLAG_DCB_ENABLED;
8064                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
8065                 }
8066                 pf->num_lan_qps = pf->rss_size_max;
8067                 queues_left -= pf->num_lan_qps;
8068         }
8069
8070         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8071                 if (queues_left > 1) {
8072                         queues_left -= 1; /* save 1 queue for FD */
8073                 } else {
8074                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8075                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
8076                 }
8077         }
8078
8079         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8080             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
8081                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
8082                                         (queues_left / pf->num_vf_qps));
8083                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
8084         }
8085
8086         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
8087             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
8088                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
8089                                           (queues_left / pf->num_vmdq_qps));
8090                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
8091         }
8092
8093         pf->queues_left = queues_left;
8094         return;
8095 }
8096
8097 /**
8098  * i40e_setup_pf_filter_control - Setup PF static filter control
8099  * @pf: PF to be setup
8100  *
8101  * i40e_setup_pf_filter_control sets up a pf's initial filter control
8102  * settings. If PE/FCoE are enabled then it will also set the per PF
8103  * based filter sizes required for them. It also enables Flow director,
8104  * ethertype and macvlan type filter settings for the pf.
8105  *
8106  * Returns 0 on success, negative on failure
8107  **/
8108 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
8109 {
8110         struct i40e_filter_control_settings *settings = &pf->filter_settings;
8111
8112         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
8113
8114         /* Flow Director is enabled */
8115         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
8116                 settings->enable_fdir = true;
8117
8118         /* Ethtype and MACVLAN filters enabled for PF */
8119         settings->enable_ethtype = true;
8120         settings->enable_macvlan = true;
8121
8122         if (i40e_set_filter_control(&pf->hw, settings))
8123                 return -ENOENT;
8124
8125         return 0;
8126 }
8127
8128 #define INFO_STRING_LEN 255
8129 static void i40e_print_features(struct i40e_pf *pf)
8130 {
8131         struct i40e_hw *hw = &pf->hw;
8132         char *buf, *string;
8133
8134         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
8135         if (!string) {
8136                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
8137                 return;
8138         }
8139
8140         buf = string;
8141
8142         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
8143 #ifdef CONFIG_PCI_IOV
8144         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
8145 #endif
8146         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
8147                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
8148
8149         if (pf->flags & I40E_FLAG_RSS_ENABLED)
8150                 buf += sprintf(buf, "RSS ");
8151         buf += sprintf(buf, "FDir ");
8152         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
8153                 buf += sprintf(buf, "ATR ");
8154         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
8155                 buf += sprintf(buf, "NTUPLE ");
8156         if (pf->flags & I40E_FLAG_DCB_ENABLED)
8157                 buf += sprintf(buf, "DCB ");
8158         if (pf->flags & I40E_FLAG_PTP)
8159                 buf += sprintf(buf, "PTP ");
8160
8161         BUG_ON(buf > (string + INFO_STRING_LEN));
8162         dev_info(&pf->pdev->dev, "%s\n", string);
8163         kfree(string);
8164 }
8165
8166 /**
8167  * i40e_probe - Device initialization routine
8168  * @pdev: PCI device information struct
8169  * @ent: entry in i40e_pci_tbl
8170  *
8171  * i40e_probe initializes a pf identified by a pci_dev structure.
8172  * The OS initialization, configuring of the pf private structure,
8173  * and a hardware reset occur.
8174  *
8175  * Returns 0 on success, negative on failure
8176  **/
8177 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8178 {
8179         struct i40e_driver_version dv;
8180         struct i40e_pf *pf;
8181         struct i40e_hw *hw;
8182         static u16 pfs_found;
8183         u16 link_status;
8184         int err = 0;
8185         u32 len;
8186
8187         err = pci_enable_device_mem(pdev);
8188         if (err)
8189                 return err;
8190
8191         /* set up for high or low dma */
8192         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
8193         if (err) {
8194                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
8195                 if (err) {
8196                         dev_err(&pdev->dev,
8197                                 "DMA configuration failed: 0x%x\n", err);
8198                         goto err_dma;
8199                 }
8200         }
8201
8202         /* set up pci connections */
8203         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
8204                                            IORESOURCE_MEM), i40e_driver_name);
8205         if (err) {
8206                 dev_info(&pdev->dev,
8207                          "pci_request_selected_regions failed %d\n", err);
8208                 goto err_pci_reg;
8209         }
8210
8211         pci_enable_pcie_error_reporting(pdev);
8212         pci_set_master(pdev);
8213
8214         /* Now that we have a PCI connection, we need to do the
8215          * low level device setup.  This is primarily setting up
8216          * the Admin Queue structures and then querying for the
8217          * device's current profile information.
8218          */
8219         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
8220         if (!pf) {
8221                 err = -ENOMEM;
8222                 goto err_pf_alloc;
8223         }
8224         pf->next_vsi = 0;
8225         pf->pdev = pdev;
8226         set_bit(__I40E_DOWN, &pf->state);
8227
8228         hw = &pf->hw;
8229         hw->back = pf;
8230         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
8231                               pci_resource_len(pdev, 0));
8232         if (!hw->hw_addr) {
8233                 err = -EIO;
8234                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
8235                          (unsigned int)pci_resource_start(pdev, 0),
8236                          (unsigned int)pci_resource_len(pdev, 0), err);
8237                 goto err_ioremap;
8238         }
8239         hw->vendor_id = pdev->vendor;
8240         hw->device_id = pdev->device;
8241         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
8242         hw->subsystem_vendor_id = pdev->subsystem_vendor;
8243         hw->subsystem_device_id = pdev->subsystem_device;
8244         hw->bus.device = PCI_SLOT(pdev->devfn);
8245         hw->bus.func = PCI_FUNC(pdev->devfn);
8246         pf->instance = pfs_found;
8247
8248         /* do a special CORER for clearing PXE mode once at init */
8249         if (hw->revision_id == 0 &&
8250             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
8251                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
8252                 i40e_flush(hw);
8253                 msleep(200);
8254                 pf->corer_count++;
8255
8256                 i40e_clear_pxe_mode(hw);
8257         }
8258
8259         /* Reset here to make sure all is clean and to define PF 'n' */
8260         err = i40e_pf_reset(hw);
8261         if (err) {
8262                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
8263                 goto err_pf_reset;
8264         }
8265         pf->pfr_count++;
8266
8267         hw->aq.num_arq_entries = I40E_AQ_LEN;
8268         hw->aq.num_asq_entries = I40E_AQ_LEN;
8269         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8270         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8271         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
8272         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
8273                  "%s-pf%d:misc",
8274                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
8275
8276         err = i40e_init_shared_code(hw);
8277         if (err) {
8278                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
8279                 goto err_pf_reset;
8280         }
8281
8282         /* set up a default setting for link flow control */
8283         pf->hw.fc.requested_mode = I40E_FC_NONE;
8284
8285         err = i40e_init_adminq(hw);
8286         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
8287         if (err) {
8288                 dev_info(&pdev->dev,
8289                          "init_adminq failed: %d expecting API %02x.%02x\n",
8290                          err,
8291                          I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
8292                 goto err_pf_reset;
8293         }
8294
8295         i40e_verify_eeprom(pf);
8296
8297         i40e_clear_pxe_mode(hw);
8298         err = i40e_get_capabilities(pf);
8299         if (err)
8300                 goto err_adminq_setup;
8301
8302         err = i40e_sw_init(pf);
8303         if (err) {
8304                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
8305                 goto err_sw_init;
8306         }
8307
8308         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
8309                                 hw->func_caps.num_rx_qp,
8310                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
8311         if (err) {
8312                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
8313                 goto err_init_lan_hmc;
8314         }
8315
8316         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
8317         if (err) {
8318                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
8319                 err = -ENOENT;
8320                 goto err_configure_lan_hmc;
8321         }
8322
8323         i40e_get_mac_addr(hw, hw->mac.addr);
8324         if (!is_valid_ether_addr(hw->mac.addr)) {
8325                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
8326                 err = -EIO;
8327                 goto err_mac_addr;
8328         }
8329         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
8330         memcpy(hw->mac.perm_addr, hw->mac.addr, ETH_ALEN);
8331
8332         pci_set_drvdata(pdev, pf);
8333         pci_save_state(pdev);
8334 #ifdef CONFIG_I40E_DCB
8335         err = i40e_init_pf_dcb(pf);
8336         if (err) {
8337                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
8338                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
8339                 goto err_init_dcb;
8340         }
8341 #endif /* CONFIG_I40E_DCB */
8342
8343         /* set up periodic task facility */
8344         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
8345         pf->service_timer_period = HZ;
8346
8347         INIT_WORK(&pf->service_task, i40e_service_task);
8348         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
8349         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
8350         pf->link_check_timeout = jiffies;
8351
8352         /* WoL defaults to disabled */
8353         pf->wol_en = false;
8354         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
8355
8356         /* set up the main switch operations */
8357         i40e_determine_queue_usage(pf);
8358         i40e_init_interrupt_scheme(pf);
8359
8360         /* Set up the *vsi struct based on the number of VSIs in the HW,
8361          * and set up our local tracking of the MAIN PF vsi.
8362          */
8363         len = sizeof(struct i40e_vsi *) * pf->hw.func_caps.num_vsis;
8364         pf->vsi = kzalloc(len, GFP_KERNEL);
8365         if (!pf->vsi) {
8366                 err = -ENOMEM;
8367                 goto err_switch_setup;
8368         }
8369
8370         err = i40e_setup_pf_switch(pf, false);
8371         if (err) {
8372                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
8373                 goto err_vsis;
8374         }
8375
8376         /* The main driver is (mostly) up and happy. We need to set this state
8377          * before setting up the misc vector or we get a race and the vector
8378          * ends up disabled forever.
8379          */
8380         clear_bit(__I40E_DOWN, &pf->state);
8381
8382         /* In case of MSIX we are going to setup the misc vector right here
8383          * to handle admin queue events etc. In case of legacy and MSI
8384          * the misc functionality and queue processing is combined in
8385          * the same vector and that gets setup at open.
8386          */
8387         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8388                 err = i40e_setup_misc_vector(pf);
8389                 if (err) {
8390                         dev_info(&pdev->dev,
8391                                  "setup of misc vector failed: %d\n", err);
8392                         goto err_vsis;
8393                 }
8394         }
8395
8396         /* prep for VF support */
8397         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8398             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
8399             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
8400                 u32 val;
8401
8402                 /* disable link interrupts for VFs */
8403                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
8404                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
8405                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
8406                 i40e_flush(hw);
8407
8408                 if (pci_num_vf(pdev)) {
8409                         dev_info(&pdev->dev,
8410                                  "Active VFs found, allocating resources.\n");
8411                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
8412                         if (err)
8413                                 dev_info(&pdev->dev,
8414                                          "Error %d allocating resources for existing VFs\n",
8415                                          err);
8416                 }
8417         }
8418
8419         pfs_found++;
8420
8421         i40e_dbg_pf_init(pf);
8422
8423         /* tell the firmware that we're starting */
8424         dv.major_version = DRV_VERSION_MAJOR;
8425         dv.minor_version = DRV_VERSION_MINOR;
8426         dv.build_version = DRV_VERSION_BUILD;
8427         dv.subbuild_version = 0;
8428         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
8429
8430         /* since everything's happy, start the service_task timer */
8431         mod_timer(&pf->service_timer,
8432                   round_jiffies(jiffies + pf->service_timer_period));
8433
8434         /* Get the negotiated link width and speed from PCI config space */
8435         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
8436
8437         i40e_set_pci_config_data(hw, link_status);
8438
8439         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
8440                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
8441                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
8442                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
8443                  "Unknown"),
8444                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
8445                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
8446                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
8447                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
8448                  "Unknown"));
8449
8450         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
8451             hw->bus.speed < i40e_bus_speed_8000) {
8452                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
8453                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
8454         }
8455
8456         /* print a string summarizing features */
8457         i40e_print_features(pf);
8458
8459         return 0;
8460
8461         /* Unwind what we've done if something failed in the setup */
8462 err_vsis:
8463         set_bit(__I40E_DOWN, &pf->state);
8464         i40e_clear_interrupt_scheme(pf);
8465         kfree(pf->vsi);
8466 err_switch_setup:
8467         i40e_reset_interrupt_capability(pf);
8468         del_timer_sync(&pf->service_timer);
8469 #ifdef CONFIG_I40E_DCB
8470 err_init_dcb:
8471 #endif /* CONFIG_I40E_DCB */
8472 err_mac_addr:
8473 err_configure_lan_hmc:
8474         (void)i40e_shutdown_lan_hmc(hw);
8475 err_init_lan_hmc:
8476         kfree(pf->qp_pile);
8477         kfree(pf->irq_pile);
8478 err_sw_init:
8479 err_adminq_setup:
8480         (void)i40e_shutdown_adminq(hw);
8481 err_pf_reset:
8482         iounmap(hw->hw_addr);
8483 err_ioremap:
8484         kfree(pf);
8485 err_pf_alloc:
8486         pci_disable_pcie_error_reporting(pdev);
8487         pci_release_selected_regions(pdev,
8488                                      pci_select_bars(pdev, IORESOURCE_MEM));
8489 err_pci_reg:
8490 err_dma:
8491         pci_disable_device(pdev);
8492         return err;
8493 }
8494
8495 /**
8496  * i40e_remove - Device removal routine
8497  * @pdev: PCI device information struct
8498  *
8499  * i40e_remove is called by the PCI subsystem to alert the driver
8500  * that is should release a PCI device.  This could be caused by a
8501  * Hot-Plug event, or because the driver is going to be removed from
8502  * memory.
8503  **/
8504 static void i40e_remove(struct pci_dev *pdev)
8505 {
8506         struct i40e_pf *pf = pci_get_drvdata(pdev);
8507         i40e_status ret_code;
8508         u32 reg;
8509         int i;
8510
8511         i40e_dbg_pf_exit(pf);
8512
8513         i40e_ptp_stop(pf);
8514
8515         /* no more scheduling of any task */
8516         set_bit(__I40E_DOWN, &pf->state);
8517         del_timer_sync(&pf->service_timer);
8518         cancel_work_sync(&pf->service_task);
8519
8520         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
8521                 i40e_free_vfs(pf);
8522                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
8523         }
8524
8525         i40e_fdir_teardown(pf);
8526
8527         /* If there is a switch structure or any orphans, remove them.
8528          * This will leave only the PF's VSI remaining.
8529          */
8530         for (i = 0; i < I40E_MAX_VEB; i++) {
8531                 if (!pf->veb[i])
8532                         continue;
8533
8534                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
8535                     pf->veb[i]->uplink_seid == 0)
8536                         i40e_switch_branch_release(pf->veb[i]);
8537         }
8538
8539         /* Now we can shutdown the PF's VSI, just before we kill
8540          * adminq and hmc.
8541          */
8542         if (pf->vsi[pf->lan_vsi])
8543                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
8544
8545         i40e_stop_misc_vector(pf);
8546         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8547                 synchronize_irq(pf->msix_entries[0].vector);
8548                 free_irq(pf->msix_entries[0].vector, pf);
8549         }
8550
8551         /* shutdown and destroy the HMC */
8552         ret_code = i40e_shutdown_lan_hmc(&pf->hw);
8553         if (ret_code)
8554                 dev_warn(&pdev->dev,
8555                          "Failed to destroy the HMC resources: %d\n", ret_code);
8556
8557         /* shutdown the adminq */
8558         ret_code = i40e_shutdown_adminq(&pf->hw);
8559         if (ret_code)
8560                 dev_warn(&pdev->dev,
8561                          "Failed to destroy the Admin Queue resources: %d\n",
8562                          ret_code);
8563
8564         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
8565         i40e_clear_interrupt_scheme(pf);
8566         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
8567                 if (pf->vsi[i]) {
8568                         i40e_vsi_clear_rings(pf->vsi[i]);
8569                         i40e_vsi_clear(pf->vsi[i]);
8570                         pf->vsi[i] = NULL;
8571                 }
8572         }
8573
8574         for (i = 0; i < I40E_MAX_VEB; i++) {
8575                 kfree(pf->veb[i]);
8576                 pf->veb[i] = NULL;
8577         }
8578
8579         kfree(pf->qp_pile);
8580         kfree(pf->irq_pile);
8581         kfree(pf->sw_config);
8582         kfree(pf->vsi);
8583
8584         /* force a PF reset to clean anything leftover */
8585         reg = rd32(&pf->hw, I40E_PFGEN_CTRL);
8586         wr32(&pf->hw, I40E_PFGEN_CTRL, (reg | I40E_PFGEN_CTRL_PFSWR_MASK));
8587         i40e_flush(&pf->hw);
8588
8589         iounmap(pf->hw.hw_addr);
8590         kfree(pf);
8591         pci_release_selected_regions(pdev,
8592                                      pci_select_bars(pdev, IORESOURCE_MEM));
8593
8594         pci_disable_pcie_error_reporting(pdev);
8595         pci_disable_device(pdev);
8596 }
8597
8598 /**
8599  * i40e_pci_error_detected - warning that something funky happened in PCI land
8600  * @pdev: PCI device information struct
8601  *
8602  * Called to warn that something happened and the error handling steps
8603  * are in progress.  Allows the driver to quiesce things, be ready for
8604  * remediation.
8605  **/
8606 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
8607                                                 enum pci_channel_state error)
8608 {
8609         struct i40e_pf *pf = pci_get_drvdata(pdev);
8610
8611         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
8612
8613         /* shutdown all operations */
8614         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
8615                 rtnl_lock();
8616                 i40e_prep_for_reset(pf);
8617                 rtnl_unlock();
8618         }
8619
8620         /* Request a slot reset */
8621         return PCI_ERS_RESULT_NEED_RESET;
8622 }
8623
8624 /**
8625  * i40e_pci_error_slot_reset - a PCI slot reset just happened
8626  * @pdev: PCI device information struct
8627  *
8628  * Called to find if the driver can work with the device now that
8629  * the pci slot has been reset.  If a basic connection seems good
8630  * (registers are readable and have sane content) then return a
8631  * happy little PCI_ERS_RESULT_xxx.
8632  **/
8633 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
8634 {
8635         struct i40e_pf *pf = pci_get_drvdata(pdev);
8636         pci_ers_result_t result;
8637         int err;
8638         u32 reg;
8639
8640         dev_info(&pdev->dev, "%s\n", __func__);
8641         if (pci_enable_device_mem(pdev)) {
8642                 dev_info(&pdev->dev,
8643                          "Cannot re-enable PCI device after reset.\n");
8644                 result = PCI_ERS_RESULT_DISCONNECT;
8645         } else {
8646                 pci_set_master(pdev);
8647                 pci_restore_state(pdev);
8648                 pci_save_state(pdev);
8649                 pci_wake_from_d3(pdev, false);
8650
8651                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
8652                 if (reg == 0)
8653                         result = PCI_ERS_RESULT_RECOVERED;
8654                 else
8655                         result = PCI_ERS_RESULT_DISCONNECT;
8656         }
8657
8658         err = pci_cleanup_aer_uncorrect_error_status(pdev);
8659         if (err) {
8660                 dev_info(&pdev->dev,
8661                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
8662                          err);
8663                 /* non-fatal, continue */
8664         }
8665
8666         return result;
8667 }
8668
8669 /**
8670  * i40e_pci_error_resume - restart operations after PCI error recovery
8671  * @pdev: PCI device information struct
8672  *
8673  * Called to allow the driver to bring things back up after PCI error
8674  * and/or reset recovery has finished.
8675  **/
8676 static void i40e_pci_error_resume(struct pci_dev *pdev)
8677 {
8678         struct i40e_pf *pf = pci_get_drvdata(pdev);
8679
8680         dev_info(&pdev->dev, "%s\n", __func__);
8681         if (test_bit(__I40E_SUSPENDED, &pf->state))
8682                 return;
8683
8684         rtnl_lock();
8685         i40e_handle_reset_warning(pf);
8686         rtnl_lock();
8687 }
8688
8689 /**
8690  * i40e_shutdown - PCI callback for shutting down
8691  * @pdev: PCI device information struct
8692  **/
8693 static void i40e_shutdown(struct pci_dev *pdev)
8694 {
8695         struct i40e_pf *pf = pci_get_drvdata(pdev);
8696         struct i40e_hw *hw = &pf->hw;
8697
8698         set_bit(__I40E_SUSPENDED, &pf->state);
8699         set_bit(__I40E_DOWN, &pf->state);
8700         rtnl_lock();
8701         i40e_prep_for_reset(pf);
8702         rtnl_unlock();
8703
8704         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8705         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8706
8707         if (system_state == SYSTEM_POWER_OFF) {
8708                 pci_wake_from_d3(pdev, pf->wol_en);
8709                 pci_set_power_state(pdev, PCI_D3hot);
8710         }
8711 }
8712
8713 #ifdef CONFIG_PM
8714 /**
8715  * i40e_suspend - PCI callback for moving to D3
8716  * @pdev: PCI device information struct
8717  **/
8718 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
8719 {
8720         struct i40e_pf *pf = pci_get_drvdata(pdev);
8721         struct i40e_hw *hw = &pf->hw;
8722
8723         set_bit(__I40E_SUSPENDED, &pf->state);
8724         set_bit(__I40E_DOWN, &pf->state);
8725         rtnl_lock();
8726         i40e_prep_for_reset(pf);
8727         rtnl_unlock();
8728
8729         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8730         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8731
8732         pci_wake_from_d3(pdev, pf->wol_en);
8733         pci_set_power_state(pdev, PCI_D3hot);
8734
8735         return 0;
8736 }
8737
8738 /**
8739  * i40e_resume - PCI callback for waking up from D3
8740  * @pdev: PCI device information struct
8741  **/
8742 static int i40e_resume(struct pci_dev *pdev)
8743 {
8744         struct i40e_pf *pf = pci_get_drvdata(pdev);
8745         u32 err;
8746
8747         pci_set_power_state(pdev, PCI_D0);
8748         pci_restore_state(pdev);
8749         /* pci_restore_state() clears dev->state_saves, so
8750          * call pci_save_state() again to restore it.
8751          */
8752         pci_save_state(pdev);
8753
8754         err = pci_enable_device_mem(pdev);
8755         if (err) {
8756                 dev_err(&pdev->dev,
8757                         "%s: Cannot enable PCI device from suspend\n",
8758                         __func__);
8759                 return err;
8760         }
8761         pci_set_master(pdev);
8762
8763         /* no wakeup events while running */
8764         pci_wake_from_d3(pdev, false);
8765
8766         /* handling the reset will rebuild the device state */
8767         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
8768                 clear_bit(__I40E_DOWN, &pf->state);
8769                 rtnl_lock();
8770                 i40e_reset_and_rebuild(pf, false);
8771                 rtnl_unlock();
8772         }
8773
8774         return 0;
8775 }
8776
8777 #endif
8778 static const struct pci_error_handlers i40e_err_handler = {
8779         .error_detected = i40e_pci_error_detected,
8780         .slot_reset = i40e_pci_error_slot_reset,
8781         .resume = i40e_pci_error_resume,
8782 };
8783
8784 static struct pci_driver i40e_driver = {
8785         .name     = i40e_driver_name,
8786         .id_table = i40e_pci_tbl,
8787         .probe    = i40e_probe,
8788         .remove   = i40e_remove,
8789 #ifdef CONFIG_PM
8790         .suspend  = i40e_suspend,
8791         .resume   = i40e_resume,
8792 #endif
8793         .shutdown = i40e_shutdown,
8794         .err_handler = &i40e_err_handler,
8795         .sriov_configure = i40e_pci_sriov_configure,
8796 };
8797
8798 /**
8799  * i40e_init_module - Driver registration routine
8800  *
8801  * i40e_init_module is the first routine called when the driver is
8802  * loaded. All it does is register with the PCI subsystem.
8803  **/
8804 static int __init i40e_init_module(void)
8805 {
8806         pr_info("%s: %s - version %s\n", i40e_driver_name,
8807                 i40e_driver_string, i40e_driver_version_str);
8808         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
8809         i40e_dbg_init();
8810         return pci_register_driver(&i40e_driver);
8811 }
8812 module_init(i40e_init_module);
8813
8814 /**
8815  * i40e_exit_module - Driver exit cleanup routine
8816  *
8817  * i40e_exit_module is called just before the driver is removed
8818  * from memory.
8819  **/
8820 static void __exit i40e_exit_module(void)
8821 {
8822         pci_unregister_driver(&i40e_driver);
8823         i40e_dbg_exit();
8824 }
8825 module_exit(i40e_exit_module);